Recording apparatus

ABSTRACT

A recording apparatus includes a recording unit which performs recording on a sheet which is transported along a transport path, a printer unit which accommodates the recording unit, a medium discharging port from which the sheet on which recording is performed by the recording unit is discharged, and a placing table which is located at a higher part of the recording unit, receives and supports the sheet which is discharged by the medium discharging port, and is provided in an openable-closable manner with respect to the printer unit. In addition, an access path through which it is possible to access the recording unit from the higher part by causing the placing table to be opened is formed.

BACKGROUND

1. Technical Field

The present invention relates to a recording apparatus.

2. Related Art

In the related art, as a type of a recording apparatus, an ink jetprinter which performs printing (recording) by ejecting ink onto amedium such as a sheet from a line head (recording unit) has been known(for example, refer to JP-A-2013-136242). Such a printer includes anapparatus housing in which a higher housing which has a sheetdischarging unit on a top face is rotatably configured with respect to alower housing around a shaft line which is extended in the horizontaldirection.

That is, the higher housing is rotatably configured between a positionwhich is close to the lower housing and a position which is separatedfrom the lower housing. In addition, since the higher housing is mountedwith a line head in the printer, it is possible to perform maintenanceof the head by accessing the head of the higher housing from an openingon the front face side which is formed when the higher housing isrotated at the position which is separated from the lower housing.

In addition, in such a printer, there is a case in which an image is notcorrectly printed on a sheet due to a recording unit which is inclinedto a width direction which is orthogonal to a transport direction of thesheet, and the quality of the printed image deteriorates.

In particular, in a printer which can eject ink over a width directionwhich is orthogonal to a transport direction of a sheet at the sametime, there is a case in which, as a recording unit, a configurationincluding a plurality of liquid ejecting heads in which nozzle columnswhich are formed of a plurality of nozzles are arranged along the widthdirection of the sheet is adopted. In this case, the recording unit isconfigured so that nozzles are continued at regular intervals in thewidth direction of the sheet, when each nozzle column of the liquidejecting head is arranged in a so-called zigzag shape which is offset inthe transport direction of the sheet.

In a case of a recording unit which includes a liquid ejecting headwhich has such a plurality of nozzle columns, the distance betweenadjacent nozzle columns in a width direction of a sheet is changed whenviewed from the transport direction of the sheet, when the recordingunit is inclined to the width direction of the sheet in a planedirection of a recording face. For this reason, a gap between nozzles inthe width direction of the sheet becomes a gap which is differentbetween nozzle columns. As a result, the quality of an image which isprinted using ink ejected from nozzles which are not at regularintervals in the width direction deteriorates.

For this reason, it is necessary to adjust the inclination of arecording unit to the width direction of a sheet which is transported,that is, the inclination of a liquid ejecting head. In addition, as amethod of adjusting the inclination of the liquid ejecting head, as inFIG. 25, in the related art, a configuration in which liquid ejectingheads 1201 to 1210 are included, and a head base body 1002 (recordingunit) which is pulled using an urging member (pulling coil spring 1232)is rotated around a reference pin 1002P against an urging force of theurging member while being in contact with a cam 1027 (eccentric cam) hasbeen proposed. That is, a method of rotating the head base body by adegree of offsetting a position deviation of the head base body 1002(recording unit) while positioning the head base body 1002 (recordingunit) by causing the cam 1027 and an outer edge of the head base body1002 (recording unit) to come into contact with each other using theurging member has been proposed (for example, refer toJP-A-2010-228434).

However, as the related art (FIG. 25), when adopting a configuration inwhich the cam 1027 rotates while pressing the head base body 1002(recording unit) against an urging force of the urging member, and whilebeing in contact with the outer edge of the head base body 1002(recording unit) which includes the plurality of liquid ejecting heads1201 to 1210, it is necessary to secure a space for arranging at least aportion of the cam 1027. For this reason, there is a concern that thehead base body 1002 (recording unit) may become large.

In addition, abrasion of at least one of the cam and the outer edge ofthe liquid ejecting head due to a rotation of the cam is acceleratedbecause of the urging force of the urging member. For this reason, therealso is a concern that it may not be possible to rotate the liquidejecting head by a degree of offsetting a position deviation using arotation of the cam.

In addition, when adopting a configuration in which the liquid ejectinghead is positioned by being urged using the urging member, for example,the urging member which urges the liquid ejecting head vibrates due tovibration which occurs when a sheet is transported at high speed, or thelike, and the liquid ejecting head may vibrate in a rotation direction.As a result, there also is a concern that the recording quality maydeteriorate due to the vibration of the liquid ejecting head.

In addition, in the above described printer, the head is attached to thehigher housing. That is, the head is provided to the higher housingwhich is different from the lower housing to which a medium in whichprinting is performed by the head is transported. For this reason, it isnecessary to secure the accuracy of a hinge of the higher housing withrespect to the lower housing so as to secure printing accuracy; however,since it is difficult to secure the accuracy of the hinge, there is aproblem in that it is not possible to secure the positional accuracy ofthe head in some cases.

SUMMARY

An advantage of some aspects of the invention is to provide a recordingapparatus in which it is possible to easily perform maintenance work ofa recording unit while securing the positional accuracy of the recordingunit, and a recording apparatus in which it is possible to suppress anincrease in the size of the apparatus by saving a space for arranging amechanism for performing an inclination correction of the recordingunit.

Hereinafter, means of the invention and operational effects thereof willbe described.

According to an aspect of the invention, there is provided a recordingapparatus which includes a recording unit which performs recording on amedium which is transported along a transport path; an accommodatingunit which accommodates the recording unit; a discharging unit whichdischarges the medium on which recording is performed by the recordingunit; and a support unit which is located at a higher part of therecording unit, receives and supports the medium which is discharged bythe discharging unit, and is openable or closable with respect to theaccommodating unit, in which an access path through which it is possibleto access the recording unit from the higher part by causing the supportunit to be opened is formed.

According to the configuration, the access path through which it ispossible to access the recording unit from the higher part is formed bycausing the support unit to be opened. In addition, the recording unitdoes not move even when the support unit is opened. Accordingly, it ispossible to easily perform maintenance work of the recording unit whilesecuring the positional accuracy of the recording unit.

In the recording apparatus, it is preferable to configure so that aportion of the support unit which overlaps the recording unit whenviewed from the above can be opened until the portion becomes smallerthan that in a closed state.

According to the configuration, it is possible to easily access therecording unit from the higher part.

According to another aspect of the invention, there is provided arecording apparatus which includes a recording unit which performsrecording on a medium which is transported along a transport path; anaccommodating unit which accommodates the recording unit; a dischargingunit which discharges the medium on which recording is performed by therecording unit; a support unit which is located at a higher part of therecording unit, receives and supports the medium which is discharged bythe discharging unit, and is openable or closable with respect to theaccommodating unit; and a path forming member which is arranged betweenthe support unit and the recording unit, and forms a reverse path onwhich the medium is reversed, in which an access path through which itis possible to access the recording unit from the higher part is formedby causing the path forming member to be opened in a state in which thesupport unit is opened.

According to the configuration, the access path through which it ispossible to access the recording unit from the higher part is formed bycausing the path forming member to be opened in a state in which thesupport unit is opened. In addition, the recording unit does not moveeven when the support unit and the path forming member are opened.Accordingly, it is possible to easily perform maintenance work of therecording unit while securing the positional accuracy of the recordingunit.

In the recording apparatus, it is preferable that the path formingmember is inclined so as to be high along a discharging direction inwhich the medium is discharged, and an opening-closing fulcrum when thepath forming member is opened or closed is located on the upstream sidein the discharging direction.

According to the configuration, it is possible to easily open the pathforming member.

In the recording apparatus, it is preferable that the path formingmember is detachably configured with respect to the accommodating unit.

According to the configuration, it is possible to further easily accessthe recording unit from the higher part by taking out the path formingmember from the accommodating unit.

In the recording apparatus, it is preferable that the support unit isinclined so as to be high along the discharging direction in which themedium is discharged, and an opening-closing fulcrum when the supportunit is opened or closed is located on the upstream side in thedischarging direction.

According to the configuration, it is possible to easily open thesupport unit.

In the recording apparatus, it is preferable that the support unit isdetachably configured with respect to the accommodating unit.

According to the configuration, it is possible to further easily accessthe recording unit from the higher part by taking out the support unitfrom the accommodating unit.

In the recording apparatus, it is preferable that, in the recordingunit, a through hole of one end side which penetrates one end portion ina longitudinal direction in a direction which goes along a normal line,and a through hole of the other end side which penetrates the other endportion in the longitudinal direction in a direction which goes alongthe normal line are provided by setting a direction which intersectsboth of a transport direction of the medium in the transport path and adirection which goes along the normal line of a recording face of themedium to the longitudinal direction, in the accommodating unit, a basestand unit in which an insertion shaft of one end side which has a shaftline in a direction which goes along the normal line, and is insertedinto the through hole of one end side, and an insertion shaft of theother end side which has a shaft line in a direction which goes alongthe normal line, and is inserted into the through hole of the other endside are provided, the through hole of one end side is a circular hole,the insertion shaft of one end side is a fixed shaft of one end sidewhich is fixed to the base stand unit, and the through hole of the otherend side is an elongated hole which has a parallel edge portion whichgoes along the longitudinal direction of the recording unit, and theinsertion shaft of the other end side is a fixed shaft of the other endside which is fixed to the base stand unit.

According to the configuration, the recording unit is prevented frommoving in the transport direction and longitudinal direction due to theinsertion shaft of one end side and the insertion shaft of the other endside, and the recording unit is positioned.

In the recording apparatus, it is preferable that the insertion shaft ofthe other end side includes an eccentric cylindrical member which has acylindrical face in which a shaft line which is eccentric from a centershaft line of the fixed shaft of the other end side is set to a centershaft on an outer face, and the cylindrical face can rotate around thefixed shaft of the other end side.

According to the configuration, by rotating the eccentric cylindricalmember, an inclination of the recording unit in the longitudinaldirection with respect to a direction intersecting the transportdirection is adjusted.

In the recording apparatus, it is preferable that the recording unit isconfigured by including a plurality of liquid ejecting heads which areprovided side by side in the longitudinal direction, and the throughhole of the other end side is arranged so as to overlap a liquidejecting head which is located at the end of the other end portion sidein the plurality of liquid ejecting heads, in the transport direction ofthe medium of the recording unit.

According to the configuration, it is possible to form the through holeof the other end side for positioning the recording unit without makinga shape of the recording unit large by extending an appearance of therecording unit in the longitudinal direction or the transversedirection. That is, it is possible to suppress increasing in size of therecording apparatus by performing space-saving of the external dimensionof the recording unit.

In the recording apparatus, it is preferable that the through hole ofone end side is arranged so as to overlap a liquid ejecting head whichis located at the end of the one end portion side in the plurality ofliquid ejecting heads, in the transport direction of the medium of therecording unit.

According to the configuration, it is possible to form the through holeof one end side for positioning the recording unit without making theshape of the recording unit large by extending the appearance of therecording unit in the longitudinal direction or transverse direction.That is, it is possible to suppress increasing in size of the recordingapparatus by performing space-saving of the external dimension of therecording unit.

In the recording apparatus, it is preferable that a moving unit whichrelatively moves the recording unit with respect to the recording faceof the medium is further included, and the insertion shaft of one endside and the insertion shaft of the other end side are guiding shaftswhich guide the movement of the recording unit, when the moving unitmoves the recording unit.

According to the configuration, since it is not necessary to separatelyprovide a guiding shaft when relatively moving the recording unit withrespect to the recording face of the medium, it is possible to prevent astructure of the recording apparatus from becoming complicated.

In the recording apparatus, it is preferable that, when the through holeof one end side into which the insertion shaft of one end side isinserted is set to a first through hole, the recording unit includes asecond through hole which is provided at a position far from therecording face of the medium compared to the first through hole in amovement direction in which the recording unit is moved by the movingunit, and into which the insertion shaft of one end side is inserted,and the second through hole is an elongated hole which has a paralleledge portion which goes along the longitudinal direction of therecording unit.

According to the configuration, when adjusting the recording unit so asto be parallel to the recording face of the medium, the insertion shaftof one end side can smoothly move without being scooped out in thesecond through hole which is an elongated hole, even when movementamounts of the recording unit in the movement direction are different inboth end portions in the longitudinal direction.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be described with reference to the accompanyingdrawings, wherein like numbers reference like elements.

FIG. 1 is a perspective view of a recording apparatus.

FIG. 2 is a schematic structural diagram of the recording apparatus.

FIG. 3 is a side sectional view of a placing table and the peripherythereof in the recording apparatus.

FIG. 4 is a front view which illustrates a state in which the placingtable in the recording apparatus is at an open position.

FIG. 5 is an enlarged perspective view of main portions whichillustrates a state in which the placing table is opened by taking out ascanner unit, an automatic sheet feeder, and an operation unit from aprinter unit in the recording apparatus.

FIG. 6 is an enlarged perspective view of the main portions whichillustrates a state in which a path forming member is opened in FIG. 5.

FIG. 7 is an enlarged perspective view of the main portions whichillustrates a state in which the path forming member is taken out inFIG. 6.

FIG. 8 is an enlarged perspective view of the main portions whichillustrates a state in which a recording unit is taken out in FIG. 7.

FIG. 9 is an enlarged perspective view of the main portions whichillustrates a state in which the recording unit is attached to theprinter unit.

FIG. 10 is an enlarged perspective view of the main portions whichillustrates a state in which a fastening plate is taken out from theprinter unit in FIG. 9.

FIG. 11 is an enlarged perspective view of the main portions whichillustrates a state in which the recording unit is taken out from theprinter unit in FIG. 10.

FIG. 12 is a structural diagram which schematically illustrates arecording apparatus according to a second embodiment.

FIG. 13 is a schematic diagram of a switching mechanism which switches asupporting table and a cap with respect to the recording unit.

FIG. 14 is a perspective view of a bearing movement mechanism whichrelatively moves the recording unit with respect to a recording face ofa medium.

FIG. 15 is a schematic diagram which illustrates a state in which thecap covers a space in which the recording unit is present.

FIG. 16 is a perspective structural diagram which illustrates astructure in which the cap is positioned with respect to the recordingunit.

FIG. 17 is a side view which illustrates a state in which the cap ispositioned with respect to the recording unit.

FIG. 18 is a perspective view in which the recording unit is viewed froma liquid ejecting head side.

FIG. 19 is a perspective view which illustrates a configuration of abase stand unit on which a transport unit of a medium, and an insertionshaft which positions the recording unit, are provided.

FIG. 20A is a perspective view of an eccentric cylindrical member.

FIG. 20B is a plan view in which the eccentric cylindrical member isviewed from a shaft line direction of a center shaft of a cylindricalface.

FIG. 21A is an explanatory diagram which schematically illustrates anadjusting operation in which an inclination of the recording unit isadjusted.

FIG. 21B is an explanatory diagram which schematically illustrates anadjusting operation in which an inclination of the recording unit isadjusted.

FIG. 22A is an explanatory diagram which schematically illustrates anadjusting operation in which the recording unit is adjusted so as to beparallel to the recording face of the medium.

FIG. 22B is an explanatory diagram which schematically illustrates anadjusting operation in which the recording unit is adjusted so as to beparallel to the recording face of the medium.

FIG. 23A is a perspective view which schematically illustrates amodification example of a positioning structure of the cap with respectto the recording unit.

FIG. 23B is a plan view in which the positioning structure is viewedfrom below.

FIG. 24A is an explanatory diagram which schematically illustrates anarrangement of a through hole in the recording unit.

FIG. 24B is an explanatory diagram which schematically illustrates anarrangement of the through hole in the recording unit.

FIG. 24C is an explanatory diagram which schematically illustrates anarrangement of the through hole in the recording unit.

FIG. 24D is an explanatory diagram which schematically illustrates anarrangement of the through hole in the recording unit.

FIG. 25 is an explanatory diagram which schematically illustrates anarrangement of an inclination correction mechanism in a recording unitin the related art.

FIG. 26 is a structural diagram which schematically illustrates arecording apparatus which does not include a reverse path.

DESCRIPTION OF EXEMPLARY EMBODIMENTS First Embodiment

Hereinafter, an embodiment of a recording apparatus will be describedwith reference to drawings.

As illustrated in FIG. 1, a recording apparatus 11 is formed in anapproximately rectangular parallelepiped shape which is long in thevertical direction Z as a whole, and includes a printer unit 12 as anexample of an accommodating unit, a scanner unit 13 which is arranged onthe printer unit 12, and an automatic sheet feeder 14 which is arrangedon the scanner unit 13. An operation unit 15 for performing variousoperations of the recording apparatus 11 is provided next to the scannerunit 13 on the printer unit 12.

As illustrated in FIG. 2, a medium transport path 20 as an example of atransport path on which a sheet P as an example of a medium istransported, and a transport unit 21 which is configured of a pluralityof rollers (pair of rollers), and transports the sheet P along themedium transport path 20 are provided in the printer unit 12. Inaddition, a supporting table 22 which supports the sheet P from thelower side in the vertical direction Z, and a line-type recording unit23 which prints an image on the sheet P which is supported by thesupporting table 22 are accommodated in the printer unit 12.

The printer unit 12 sets a direction which is orthogonal to a paper facein FIG. 2 to a width direction X of the sheet P, and transports thesheet P onto the supporting table 22, and along the medium transportpath 20 by setting a direction which intersects the width direction X asa transport direction. The recording unit 23 includes a line head as aliquid ejecting head which can eject ink over the entire region in thewidth direction X which intersects the transport direction of the sheetP at the same time at the lower part, and prints an image by ejectingink onto the sheet P which is transported on the supporting table 22from the higher side in the vertical direction Z, and causing the ink tobe attached to the sheet P.

The printed sheet P is transported to the medium transport path 20 fromthe recording unit 23 using a pair of sheet discharging rollers 24 oranother plurality of pair of transport rollers 25, and is dischargedfrom a medium discharging port 26 as an example of a discharging unitwhich is provided at an end portion of the medium transport path 20 onthe downstream side. The sheet P which is discharged from the mediumdischarging port 26 falls down, and is placed on the placing table 27 asan example of the support unit which is arranged on the higher side ofthe recording unit 23 in the vertical direction Z in a stacked state asdenoted by a two-dotted chain line in FIG. 2. That is, the placing table27 sequentially receives the printed sheet P which falls down by beingdischarged from the medium discharging port 26, and supports the sheetP.

As illustrated in FIGS. 1 and 2, the placing table 27 is formed in anapproximately rectangular plate shape, and is inclined so as to be highalong the discharging direction W of the sheet P. A top face of theplacing table 27 is set to an inclined placing face 28, and the sheet Pis placed on the placing face 28. A convex portion 29 which is extendedin the discharging direction W is formed at approximately the center ofthe sheet P in the width direction X on the placing face 28.

The sheet P which is placed on the placing face 28 slides down in adirection opposite to the discharging direction W along the inclinationof the placing face 28, and is positioned when an end portion thereof onthe side opposite to the discharging direction W side comes into contactwith a vertical side wall 30 which is provided on the downstream side ofthe medium discharging port 26 in the printer unit 12, as denoted by thetwo-dotted chain line in FIG. 2. In addition, the discharging directionW of the sheet P is remarkably inclined to a level surface compared tothe placing face 28.

As illustrated in FIG. 2, according to the embodiment, the mediumtransport path 20 includes a medium discharging path 34 which transportsthe sheet P from the recording unit 23 to the medium discharging port26, and a medium supply path which supplies the sheet P to the recordingunit 23, and the medium supply path is configured of a first mediumsupply path 31, a second medium supply path 32, and a third mediumsupply path 33 as an example of a reverse path.

The medium discharging path 34 includes a curved path 34A which iscurved by having the recording face of the sheet P which is printed bythe recording unit 23 in the inside, and a straight path 34B on whichthe sheet P is transported in one direction from the curved path 34Atoward the medium discharging port 26, between a path on which the sheetP which is printed by the recording unit 23 is transported to the mediumdischarging port 26.

The medium discharging path 34 functions as a curved reverse path onwhich the sheet P is reversed so as to face the lower side from a statein which the recording face of the sheet P faces the higher side in thevertical direction, when the sheet P is transported on the curved path34A and the straight path 34B. Accordingly, the sheet P enters a statein which the recording face thereof faces the placing face 28 of theplacing table 27 by passing through the medium discharging path 34 whichfunctions as the curved reverse path, and is discharged onto the placingtable 27 which is located at the higher part of the recording unit 23from the medium discharging port 26.

In the medium discharging path 34 which is included in the mediumtransport path 20, the transport direction of the sheet P which istransported on the straight path 34B is one direction which belongs tothe straight path 34B, and according to the embodiment, the onedirection is set to be an inclining direction in which the head isrising, which rises toward the medium discharging port 26. Accordingly,the direction of the straight path 34B (one direction) which is inclinedbecomes the discharging direction W of the sheet P which is dischargedfrom the medium discharging port 26.

In the first medium supply path 31, the sheet P which is inserted froman insertion port 36 which is exposed when a cover 35 provided on oneside face of the printer unit 12 is opened, is transported to therecording unit 23. That is, the sheet P which is inserted from theinsertion port 36 is pressed to a first driving roller 38 a using ahopper 37, is transported due to the rotational driving of the firstdriving roller 38 a, is interposed between the first driving roller 38 aand a first driven roller 38 b, and is transported toward the recordingunit 23 due to the rotational driving of the first driving roller 38 athereafter.

In the second medium supply path 32, the sheet P which is placed so asto be stacked in a sheet cassette 39 which is provided at a base portionof the printer unit 12 which is the lower side of the printer unit 12 inan inserting-extracting manner is transported to the recording unit 23.That is, in the sheets P which are placed in the sheet cassette 39 in astacked state, the top sheet P is sent out using a pickup roller 40, isinterposed between a second driving roller 42 a and a second drivenroller 42 b after being separated into one sheet using a pair ofseparation rollers 41, and is transported toward the recording unit 23due to the rotational driving of the second driving roller 42 a.

In the third medium supply path 33, when double-sided printing in whichprinting is performed on both sheet faces (paper face) is performed onthe sheet P, the sheet P of which a single sheet face is printed by therecording unit 23 is transported to the recording unit 23 again. Thatis, a branching transport path 44 which is branched from the mediumdischarging path 34 due to an operation of a branching mechanism 43which is provided in the middle of the medium discharging path 34 isprovided on the side further downstream than the recording unit 23 inthe transport direction of the sheet P. A pair of branching transportpath rollers 45 which can perform a bidirectional rotation of normalrotation and reversed rotation is provided on the downstream side of thebranching mechanism 43 on the branching transport path 44.

In addition, the sheet P of which the single sheet face is printed istemporarily transported to the branching transport path 44 from therecording unit 23 side toward the placing table 27 side using the pairof branching transport path rollers 45 which is normally rotated, at atime of double-sided printing. At this time, when a part Pe of the sheetP on the tip end side in the transport direction, which is transportedto the branching transport path 44 is projected from the mediumdischarging port 26, a projecting position thereof is set so as not tocome into contact with the sheet P which is placed in the placing table27 in a stacked state.

Thereafter, the sheet P which is transported to the branching transportpath 44 is reversely transported from the placing table 27 side to therecording unit 23 side on the branching transport path 44 using the pairof branching transport path rollers 45 which is reversely rotated. Atthis time, the sheet P which is reversely transported is transported tothe third medium supply path 33, and is transported toward the recordingunit 23 using a plurality of pair of transport rollers 25. Due totransporting to the third medium supply path 33, the sheet P is reversedso that a sheet face which is not printed faces the recording unit 23,is interposed between a third driving roller 46 a and a third drivenroller 46 b, and is transported toward the recording unit 23 due to therotational driving of the third driving roller 46 a.

The sheet P which is transported toward the recording unit 23 on each ofthe medium supply paths is transported to a pair of aligning rollers 47which is arranged on the upstream side of the recording unit 23 in thetransport direction, and a tip end thereof collides with the pair ofaligning rollers 47 which stops rotating thereafter. In addition, acorrection of an inclination of the sheet P (skew removing) in thetransport direction is performed due to such a state of being collidedwith the pair of aligning rollers 47. In addition, the sheet P of whichthe inclination is corrected is transported to the recording unit 23side by being in an aligned state due to the rotational driving of thepair of aligning rollers 47 thereafter.

The sheet P which is transported to the recording unit 23 side using thepair of aligning rollers 47 is transported while facing the recordingunit 23 using a pair of sheet sending rollers 48 which is arranged onthe upstream side of the sheet P in the transport direction, or a pairof sheet discharging rollers 24 and a pair of transport rollers 25 whichare arranged on the downstream side in the transport direction withrespect to the recording unit 23. Printing is performed on the sheet Pwhich is transported by ejecting ink from the facing recording unit 23.

As illustrated in FIG. 2, a liquid storage unit 50 which stores ink tobe supplied to the recording unit 23 is provided in the printer unit 12.That is, the liquid storage unit 50 supplies stored ink to the recordingunit 23 through an ink supply path (not illustrated) which is configuredof a tube, or the like, and the recording unit 23 prints an image, orthe like, on the sheet P by ejecting the supplied ink. According to theembodiment, the liquid storage unit 50 is arranged on the side higherthan the sheet P which is placed on the placing table 27 in the verticaldirection Z. In addition, the liquid storage unit 50 is arranged so asto cover at least a part of the medium discharging path 34 when viewedfrom the higher side in the vertical direction Z.

That is, the higher side of the medium discharging path 34 which is thecurved reverse path is formed in an inclined shape which faces onedirection due to the straight path 34B which is continued from thecurved path 34A. For this reason, in the printer unit 12, a space 12S isformed on the higher side between a portion on the higher side in thecurved path 34A and the medium discharging port 26 of the straight path34B which is in an inclined shaped.

According to the embodiment, the space 12S is formed in the printer unit12 so as to cover the medium discharging path 34 when viewed from thehigher side, in the width direction X. In addition, the liquid storageunit 50 is arranged so as to cover at least a part of the mediumdischarging path 34 when viewed from the higher side, in the space 12S.According to the embodiment, the liquid storage unit 50 is arranged soas to cover the entire medium discharging path 34 in the width directionX, when viewed from the higher side.

In the space 12S, a pair of transport rollers 25 a which is located onthe most downstream side of the sheet P in the transport direction onthe medium discharging path 34, in the plurality of pair of transportrollers 25 which are provided on the medium discharging path 34, andfunction as a discharging roller is provided at a position whichoverlaps the liquid storage unit 50 when viewed in the horizontaldirection.

In addition, in the space 12S, an air-blowing unit 57 which is locatedin a space except for a space which is occupied by the liquid storageunit 50, and on the side further downstream than the medium dischargingport 26 in the discharging direction W of the sheet P, and blows air inthe direction in which the sheet P which is discharged from the mediumdischarging port 26 is pressed to the placing face 28 side, is provided.The air-blowing unit 57 is configured of a rotating fan 58, and isprovided at a position which overlaps the liquid storage unit 50 whenviewed in the horizontal direction.

According to the embodiment, a pair of the air-blowing units 57 isprovided in the width direction X of the sheet P so that an airblowing-off port thereof faces the both end portions of the sheet P inthe width direction X around the convex portion 29 of the placing face28. As a matter of course, one air-blowing unit 57 may be provided, andan air blowing-off port thereof may be formed in a shape which iscontinuous in the width direction X of the sheet P.

The liquid storage unit 50 is configured of ink cartridges 51, 52, 53,and 54 as liquid storage bodies which respectively store ink of aplurality of types (four colors here), and a frame body 55 on which eachof the ink cartridges 51, 52, 53, and 54 is mounted. Each of the inkcartridges 51, 52, 53, and 54 is formed in an approximately rectangularparallelepiped shape with a longitudinal direction, and is mounted onthe frame body 55 which is formed in a box shape of which one face isopen, in an inserting-extracting manner through the opening, by settingthe longitudinal direction to the inserting-extracting direction.

According to the embodiment, the inserting-extracting direction of eachof the ink cartridges 51, 52, 53, and 54 is set to be a direction whichgoes along the width direction X. For this reason, an opening portion(not illustrated) to which an opening of the frame body 55 is exposedwhen viewed in the width direction X is formed in the printer unit 12,and the opening portion is included in a storage unit cover 56 (refer toFIG. 1) which is openable or closable. In addition, for example, it ispossible for a user of the recording apparatus 11 to expose the openingportion (not illustrated) by opening the storage unit cover 56 (refer toFIG. 1), and to insert each of the ink cartridges 51, 52, 53, and 54into the frame body 55 along the width direction X, or extract the inkcartridges from the frame body 55 through the exposed opening portion.

According to the embodiment, in each of the ink cartridges 51, 52, 53,and 54, the transverse direction thereof is set to be the verticaldirection Z, the longitudinal direction thereof is set to be the widthdirection X, and the thickness direction thereof is set to be thehorizontal direction which goes along the discharging direction W in astate of being mounted on the frame body 55. In addition, each of theink cartridges 51, 52, 53, and 54 has the same length in the transversedirection (vertical direction Z), respectively, and is mounted on theframe body 55 in a state of being aligned in the thickness direction.

The ink carriage 54 among each of the ink cartridges 51, 52, 53, and 54is set to be an ink cartridge which stores ink of a color of which theejecting frequency from the recording unit 23 is highest (for example,black color), and is arranged at a position which is farthest from theplacing table 27 side toward the opposite side with respect to themedium discharging port 26. In addition, the thickness of the inkcartridge 54 is set to be larger than those of other cartridges 51, 52,and 53, and it is possible for the ink cartridge 54 to store ink of aliquid amount which is larger than ink storage amounts of othercartridges 51, 52, and 53.

As illustrated in FIG. 2, a rectangular plate-shaped path forming member61 which forms a part of the third medium supply path 33 as the reversepath which reverses the sheet P along with the placing table 27 isarranged between the recording unit 23 and the placing table 27 in theprinter unit. That is, the third medium supply path 33 is formed usingthe lower face of the placing table 27 and a top face of the pathforming member 61. The path forming member 61 is inclined so as to behigh along the discharging direction W.

As illustrated in FIG. 3, shafts 62 are provided so as to form a pair inthe width direction X on the lower side of the vertical side wall 30 inthe printer unit 12, and the pair of shafts 62 is extended in the widthdirection X. A fan-shaped sector gear 63 is provided at one end portionin the width direction X in an end portion of the placing table 27 onthe upstream side in the discharging direction W, and a bearing unit(not illustrated) is provided at the other end portion. The sector gear63 is connected to the shaft 62 on one side so as to be integrallyrotated, and the bearing unit is supported by the shaft 62 on the otherside so as to be rotated. Accordingly, the placing table 27 can rotatearound the pair of shafts 62.

That is, the placing table 27 is provided at the printer unit 12 in anopenable-closable manner, and can rotate (opening-closing operation)between a closing position at which the printer unit 12 is closed(position in closed state which is illustrated in FIG. 1) and an openposition at which the printer unit 12 is opened (position in open statewhich is illustrated in FIG. 4). Accordingly, an opening-closing fulcrum(center of rotation) when the placing table 27 performs theopening-closing operation (rotating operation) is located on theupstream side (left side in FIG. 3) in the discharging direction W.

In this case, the placing table 27 is configured so that a portion whichoverlaps the recording unit 23 when viewed from the above can be openeduntil the portion becomes smaller than that in the closed state. Thatis, the placing table 27 is configured so that the portion whichoverlaps the recording unit 23 when viewed from the above becomes smallwhen at the open position compared to that of the closing position.

As illustrated in FIG. 3, a torque hinge 64 is provided on the sideopposite to the placing table 27 in the vertical side wall 30 in theprinter unit 12. The torque hinge 64 engages with the sector gear 63through a gear mechanism 65 which includes a plurality of gears. In thiscase, the torque hinge 64 is usually urged in a direction in which theplacing table 27 rotates toward the open position side with respect tothe placing table 27 through the gear mechanism 65.

An urging force of the torque hinge 64 is not large to an extent ofautomatically rotating the placing table 27 toward the open positionfrom the closing position, and is set to have a magnitude which canassist a user when the user rotates the placing table 27 from theclosing position to the open position. In addition, the urging force ofthe torque hinge 64 is set to have a magnitude which is slightly largerthan a force which is necessary when holding the placing table 27 whichis rotated toward the open position to the open position.

As illustrated in FIGS. 3 and 5, locking levers 66 which can rotatearound a shaft member 68 which is extended in the width direction X arerespectively provided at both side portions of the placing table 27 inthe width direction X. The two locking levers 66 can be respectivelylocked with pins 67 which are provided at both side portions of the pathforming member 61 in the width direction X.

That is, each locking lever 66 can be rotated between a locking positionat which the lever 66 is locked with each pin 67 (position denoted bytwo-dotted chain line in FIG. 3) and a releasing position (positiondenoted by solid line in FIG. 3) at which a locking state with each pin67 is released, when the placing table 27 is at the closing position. Inaddition, each locking lever 66 is urged in a direction (clockwise inFIG. 3) in which the locking lever usually rotates around the shaftmember 68 toward the locking position due to an urging member (notillustrated). Accordingly, when being at the closing position, theplacing table 27 is held at the closing position against an urging forceof the torque hinge 64 when each locking lever 66 is locked with eachpin 67.

As illustrated in FIGS. 5 and 6, the path forming member 61 includessupport arms 61 a at both end portions in the width direction X at anend portion of the vertical side wall 30, respectively. At positionscorresponding to tip end portions of the two support arms 61 a in theprinter unit 12, shaft units 69 are provided in a protruding manneralong the width direction X, respectively. Each support arm 61 a isrotatably and detachably supported at the tip end portion with respectto each shaft unit 69. Accordingly, the path forming member 61 canrotate around each shaft unit 69.

That is, the path forming member 61 is provided in an openable-closablemanner with respect to the printer unit 12, and can rotate(opening-closing operation) between a closing position at which theprinter unit 12 is closed (position in closed state illustrated in FIG.5) and an open position at which the printer unit 12 is opened (positionin open state illustrated in FIG. 6). Accordingly, an opening-closingfulcrum (center of rotation) when the path forming member 61 performsthe opening-closing operation (rotating operation) is located on theupstream side (left side in FIG. 5) in the discharging direction W.

In this case, the path forming member 61 is configured so that a portionwhich overlaps the recording unit 23 when viewed from the above can beopened until the portion becomes smaller than that in the closed state.That is, the path forming member 61 is configured so that the portionwhich overlaps the recording unit 23 when viewed from the above becomessmall when at the open position compared to that of the closingposition.

The path forming member 61 is usually screwed with respect to theprinter unit 12 using a screw (not illustrated) when at the closingposition. Accordingly, the path forming member 61 can be taken out fromthe printer unit 12 when each support arm 61 a is removed from eachshaft unit 69, after releasing the screwed state with respect to theprinter unit 12 by removing the screw. That is, the path forming member61 is configured so as to be detached with respect to the printer unit12.

Subsequently, an operation when performing maintenance work of therecording unit 23 in the recording apparatus 11 will be described.

Meanwhile, at a time of performing exchange work which is one of thetypes of maintenance work of the recording unit 23, when the recordingunit 23 is taken out from the recording apparatus 11, first, asillustrated in FIG. 5, the scanner unit 13, the automatic sheet feeder14, and the operation unit 15 are taken out from the printer unit 12.Subsequently, the placing table 27 is caused to be opened, and isrotated toward the open position in a state in which the locking lever66 is rotated toward a release position. At this time, the placing table27 is held at the open position due to the urging force of the torquehinge 64.

Subsequently, the screwed state of the path forming member 61 withrespect to the printer unit 12 is released by removing the screw whichfixes the path forming member 61 to the printer unit 12, and thereafter,as illustrated in FIG. 6, the path forming member 61 is caused to beopened, and is rotated toward the open position. In this manner, therecording unit 23 is exposed. That is, an access path AK, through whichit is possible to access the recording unit 23 from the higher part fromthe outside of the printer unit 12, is formed by causing the pathforming member 61 to be opened in a state in which the placing table 27is opened.

Subsequently, as illustrated in FIG. 7, the path forming member 61 istaken out from the printer unit 12 by removing each support arm 61 a ofthe path forming member 61 from each shaft unit 69. Subsequently, asillustrated in FIG. 8, the recording unit 23 is taken out from theinside of the printer unit 12 by accessing the recording unit 23 fromthe higher part through the access path AK. In addition, the taken outrecording unit 23 is exchanged for a new one, and the new recording unitis assembled at a predetermined position in the printer unit 12.

Subsequently, the placing table 27 is rotated toward the closingposition, after the path forming member 61 is attached to the originalposition in the printer unit 12. Thereafter, the scanner unit 13, theautomatic sheet feeder 14, and the operation unit 15 are assembled inthe printer unit 12, and the work is completed.

Subsequently, an attaching structure of the recording unit 23 withrespect to the printer unit 12 will be described.

As illustrated in FIG. 9, plate-shaped support pieces 70 which supportthe recording unit 23 are respectively provided on both side faces inthe printer unit 12 in the width direction X in a protruding manner, andthe pins 71 are erected on each of the support pieces 70. Insertionholes 23 a which can be inserted into the pin 71 are formed so as topenetrate the insertion hole in the vertical direction Z at both endportions of the recording unit 23 in the width direction X. In addition,when each pin 71 is inserted into each insertion hole 23 a, therecording unit 23 is supported by each support piece 70. At this time,positioning of the recording unit 23 in the horizontal direction whichis orthogonal to the vertical direction Z is performed using each pin71.

Both of the end portions on a top face of the recording unit 23 in thewidth direction X are supported so as to be pressed from the higherside, respectively, using approximately rectangular-shaped fasteningplates 72. That is, in each fastening plate 72, a tip end portion of thepin 71 is inserted into a through hole 72 a which is provided at one endportion, and the other end portion is fixed to the printer unit 12 usinga screw 73. At this time, positioning of the recording unit 23 in thevertical direction Z is performed using each fastening plate 72.

In addition, when taking out the recording unit 23 from the printer unit12, as illustrated in FIG. 10, first, each fastening plate 72 is takenout by removing each screw 73. Thereafter, as illustrated in FIG. 11,when lifting the recording unit 23 upward, each pin 71 falls out fromeach insertion hole 23 a, and the recording unit 23 is taken out fromthe printer unit 12.

Meanwhile, when the recording unit 23 is attached to the printer unit12, as illustrated in FIG. 10, first, each pin 71 is inserted into eachinsertion hole 23 a, and the recording unit 23 is supported by eachsupport piece 70. Thereafter, as illustrated in FIG. 9, the recordingunit 23 is attached to the printer unit 12 when each fastening plate 72is fixed to the printer unit 12 using each screw 73, in a state in whicheach pin 71 is inserted into the through hole 72 a of each fasteningplate 72.

As described above, according to the above described embodiment, it ispossible to obtain the following effects.

(1) In the recording apparatus 11, the access path AK through which itis possible to access the recording unit 23 from the higher part fromthe outside of the printer unit 12 is formed by causing the path formingmember 61 to be opened in a state in which the placing table 27 which isa part of the printer unit 12 is opened. For this reason, it is possibleto access the recording unit 23 from the higher part through the accesspath AK from the outside of the printer unit 12. In addition, therecording unit 23 does not move when the placing table 27 and the pathforming member 61 are caused to be opened. Accordingly, it is possibleto easily perform maintenance work such as exchanging work of therecording unit 23 while securing the positional accuracy of therecording unit 23.

(2) In the recording apparatus 11, the placing table 27 and the pathforming member 61 are configured so that portions which overlap therecording unit 23 when viewed from the above can be opened until theportions become smaller than those in the closed state, respectively. Itis possible to access the recording unit 23 from the higher part byopening the placing table 27 and the path forming member 61.

(3) In the recording apparatus 11, the placing table 27 is inclined soas to be high along the discharging direction W in which the sheet P isdischarged, and the opening-closing fulcrum when the placing table 27 isopened is located at a position on the upstream side in the dischargingdirection W. For this reason, it is possible to easily open the placingtable 27.

(4) In the recording apparatus 11, the path forming member 61 isinclined so as to be high along the discharging direction W in which thesheet P is discharged, and the opening-closing fulcrum when the pathforming member 61 is opened is located at a position on the upstreamside in the discharging direction W. For this reason, it is possible toeasily open the path forming member 61.

(5) In the recording apparatus 11, the path forming member 61 isdetachably configured with respect to the printer unit 12. For thisreason, it is possible to further easily access the recording unit 23from the higher part by removing the path forming member 61 from theprinter unit 12.

Modification Example

In addition, the above described embodiment may be modified as follows.

In the recording apparatus 11, the placing table 27 may be detachablyconfigured with respect to the printer unit 12. In this manner, it ispossible to further easily access the recording unit 23 from the higherpart by taking out the placing table 27 from the printer unit 12.

In the recording apparatus 11, the path forming member 61 is notnecessarily configured so as to be detached from the printer unit 12.

In the recording apparatus 11, the path forming member 61 is notnecessarily inclined so as to be high along the discharging direction Win which the sheet P is discharged. In addition, the opening-closingfulcrum when the path forming member 61 is opened is not necessarilylocated on the upstream side in the discharging direction W.

In the recording apparatus 11, the placing table 27 is not necessarilycaused to be inclined so as to be high along the discharging direction Win which the sheet P is discharged. In addition, the opening-closingfulcrum when the placing table 27 is opened is not necessarily locatedon the upstream side in the discharging direction W.

In the recording apparatus 11, it is not necessary to configure theplacing table 27 and the path forming member 61 so that portions whichoverlap the recording unit 23 when viewed from the above are necessarilyopened until the portions become smaller than those in the closed state,respectively.

In the recording apparatus 11, exchanging work (maintenance work) of therecording unit 23 may be performed without taking out the scanner unit13, the automatic sheet feeder 14, and the operation unit 15 from theprinter unit 12.

In the recording apparatus 11, exchanging work of the recording unit 23may be performed in a state in which the path forming member 61 is heldat the open position. In this case, it is preferable to provide a hook,or the like, for holding the path forming member 61 at the openposition.

In the recording apparatus 11, exchanging work of the recording unit 23may be performed in a state in which the placing table 27 is taken outfrom the printer unit 12.

In the recording apparatus 11, the third medium supply path 33 may beomitted. That is, the path forming member 61 may be omitted in therecording apparatus 11. In this case, the access path AK through whichit is possible to access the recording unit 23 from the higher part fromthe outside of the printer unit 12 is formed only by causing the placingtable 27 to be opened.

The medium may also be cloth, a plastic film, or the like, not only thesheet P.

The path forming member 61 which forms a part of the third medium supplypath 33 which is the reverse path on which the sheet P is reversed isarranged between the recording unit 23 and the placing table 27 in therecording apparatus 11 in FIG. 2; however, the invention is also appliedto a recording apparatus which does not include the path forming member61. In a recording apparatus 11 a in FIG. 26, the path forming member61, the branching mechanism 43, the pair of branching transport pathrollers 45, the branching transport path 44, the third driving roller 46a, and the third driven roller 46 b in FIG. 2 are not provided. Inaddition, the pair of transport rollers 25 is not provided on the higherside of a recording unit 23.

A placing table 27 in the recording apparatus 11 a in FIG. 26 isprovided so as to rotate around a pair of shafts 62, similar to therecording apparatus 11 in FIG. 2. In the recording apparatus 11 a, theplacing table 27 is configured so that a portion which overlaps therecording unit 23 when viewed from the above can be opened until theportion becomes smaller than that in the closed state. It is possible toeasily access the recording unit 23 from the higher part by opening theplacing table 27. Other configurations of the recording apparatus 11 aare the same as those in the recording apparatus 11.

Second Embodiment

Hereinafter, as another embodiment of the recording apparatus, an inkjet printer which includes a recording unit which ejects ink as anexample of liquid, and prints (records) an image including characters,figures, or the like, by ejecting ink onto a sheet which is an exampleof a medium will be described with reference to drawings.

As illustrated in FIG. 12, a printer 111 as an example of the recordingapparatus in the embodiment includes an approximately rectangularparallelepiped-shaped housing 112, and a plurality of pair of rollerswhich transport a sheet 114 along a transport path 113 which is denotedby one-dotted chain line in FIG. 12. In addition, a support table 117which supports the sheet 114 from the gravity direction side, and arecording unit 118 which is arranged so as to face the support table 117through the transport path 113 are provided on the transport path 113.

The recording unit 118 is a so-called line head which includes a liquidejecting head 170 (refer to FIG. 14) which can eject ink at the sametime over the width direction X which intersects (orthogonal, here) thetransport direction Y, and performs printing by ejecting ink toward thesheet 114 which passes through in a state of being supported by thesupport table 117. In addition, in the following descriptions, aposition between the support table 117 and the recording unit 118 in thetransport path 113 will be referred to as a printing position 119.

The transport path 113 is configured of a first supply path 121 and asecond supply path 122 on the side further upstream than the printingposition 119 in the transport direction Y, a third supply path 123 onthe side further downstream than the printing position 119 in thetransport direction Y, a branching path 124, and a discharging path 125.

The first supply path 121 is a path which connects a sheet cassette 127which is provided at a base portion which is a gravity direction side ofthe housing 112 in an inserting-extracting manner and the printingposition 119. In addition, a pickup roller 128 which sends out a topsheet 114 in sheets 114 which are placed in the sheet cassette 127 in astacked state, and a separation roller 129 which separates the sheet 114which is sent out using the pickup roller 128 into one sheet areprovided on the first supply path 121. In addition, a first pair ofsupply rollers 131 is provided on the side further downstream than aseparation roller 129 in the transport direction.

The second supply path 122 is a path which connects an insertion port112 b which is exposed when a cover 112 a which is provided on one sideface of the housing 112 is opened and the printing position 119. Inaddition, a second pair of supply rollers 132 which transports the sheet114 which is inserted from the insertion port 112 b by interposingtherebetween is provided in the second supply path 122. In addition, athird pair of supply rollers 133 and a fourth pair of supply rollers 134are provided at a position at which the first supply path 121, thesecond supply path 122, and the third supply path 123 join, and a fifthpair of supply rollers 135 is provided on the third supply path 123.

The third supply path 123 is a path which is provided so as to surroundthe recording unit 118, and is a path which returns the sheet 114 whichtemporarily passes through the printing position 119 to the side furtherupstream than the printing position 119 again. That is, a branchingmechanism 136 is provided on the side further downstream than theprinting position 119, and a pair of branching rollers 137 which canperform a bidirectional rotation of a normal rotation and a reversalrotation is provided on the branching path 124 which is branched fromthe discharging path 125.

The discharging path 125 is a path which connects a discharging port 138from which a printed sheet 114 is discharged and the printing position119. In addition, the sheet 114 which is discharged from the dischargingport 138 is placed on a placing table 139. In addition, at least one(six in the embodiment) of the first pair of transport rollers 141 tothe sixth pair of transport rollers 146 is provided on the dischargingpath 125. In addition, a seventh pair of transport rollers 147 and aneighth pair of transport rollers 148 are provided also on the thirdsupply path 123. The first pair of transport rollers 141 to the eighthpair of transport rollers 148 transport a sheet 114 onto which ink isattached by interposing therebetween.

That is, the first pair of transport rollers 141 to the eighth pair oftransport rollers 148 are configured of a columnar driving roller 150which rotates based on a driving force of a driving source, and atoothed roller 149 which is rotated along a rotation of the drivingroller 150. The toothed roller 149 is also solely provided withoutforming a pair with the driving roller 150. That is, the toothed roller149 is provided on the side on which a printing face of the sheet 114 onwhich printing is performed (that is, face onto which ink as an exampleof liquid is attached by being ejected) passes through on the thirdsupply path 123, the branching path 124, and the discharging path 125.The toothed roller 149 is also provided between each pair of transportrollers of the first pair of transport rollers 141 to the eighth pair oftransport rollers 148, and is also provided between each pair oftransport rollers and the recording unit 118 in the transport direction.Meanwhile, the driving roller 150 is provided on the side on which anon-printing face (non-recording face) of the sheet 114 on whichprinting is not performed, or a face on which printing is performed inadvance when it is a sheet 114 which is subjected to double-sidedprinting passes through.

According to the embodiment, in the printing position 119, at least thefourth pair of supply roller 134 faces the recording unit 118, andfunctions as a transport unit 115 which transports the sheet 114 in astate of being supported by the support table 117. In addition, thefourth pair of supply roller 134 includes a driving roller 134 a whichis rotatably driven by a driving source (not illustrated), and a drivenroller 134 b which rotates according to the driving roller 134 a, andtransports the sheet 114 by interposing the sheet between these rollers.For this reason, the driving roller 134 a is set to a roller of whichthe surface is subjected to antislip processing so that the sheet 114does not slip.

As illustrated in FIG. 13, the recording unit 118 is provided with acylindrical unit 153 which includes a through hole of one end side 151(−X side here) in the width direction X, and is provided with a flatplate unit 154 which includes a through hole of the other end side 152on the other end side (+X side here) (refer to FIG. 18). An insertionshaft of one end side 191 and an insertion shaft of the other end side192 which are provided in a base stand unit 199 (refer to FIGS. 16 and19) which is provided in the housing 112 are respectively inserted intothe through hole of one end side 151 and the through hole of the otherend side 152, and the recording unit 118 is positioned in the transportdirection Y.

According to the embodiment, the through hole of one end side 151 of thecylindrical unit 153 is formed of a first bush 155 and a second bush 156which are mounted on the cylindrical unit 153 with an interval in ashaft line direction of the insertion shaft of one end side 191 of whicha shaft plane is circular. That is, on the cylindrical unit 153, thefirst bush 155 and the second bush 156 are mounted at a side end portionwhich is close to the support table 117, and at a side end portion whichis far from the support table 117, respectively, in the insertiondirection of the insertion shaft of one end side 191.

A first through hole 151A as a circular hole is provided in the firstbush 155, and a second through hole 151B (refer to FIG. 18) as a longcircular hole which is an example of an elongated hole which has alinear parallel edge portion L3 which goes along the longitudinaldirection (width direction X) of the recording unit 118, and otherportions are set to a semicircular edge portion R3 is provided in thesecond bush 156. Accordingly, the first through hole 151A, and thesecond through hole 151B which is provided at a position far from arecording face 114P of the sheet 114 compared to the first through hole151A, and into which the insertion shaft of one end side 191 is insertedare provided at one end side of the recording unit 118 in thelongitudinal direction. The through hole of one end side 151 into whichthe insertion shaft of one end side 191 is inserted is formed of thecircular first through hole 151A and the long circular-shaped secondthrough hole 151B.

Meanwhile, the through hole of the other end side 152 which is providedin the flat plate unit 154 is provided as a long circular hole (refer toFIG. 18) as an example of an elongated hole which has a linear paralleledge portion L2 which goes along the longitudinal direction (widthdirection X) of the recording unit 118, and other portions are set to asemicircular edge portion R2. In addition, the insertion shaft of theother end side 192 which is inserted into the long circular-shapedthrough hole of the other end side 152 is configured of a fixed shaft ofthe other end side 193 which is fixed to the base stand unit 199, and ofwhich a shaft plane is circular, and an eccentric cylindrical member 194which has a cylindrical face with a shaft line which is eccentric by apredetermined dimension from a central shaft line of the fixed shaft ofthe other end side 193 as a center shaft on the outer face, and of whichthe cylindrical face can rotate around the fixed shaft of the other endside 193.

In addition, the insertion shaft of one end side 191 is a fixed shaft ofone end side which is fixed to one end side of the base stand unit 199,and a shaft protruding unit of one end side 191A which protrudes to thesheet 114 side from a portion fixed to the base stand unit 199 isprovided in the insertion shaft of one end side 191. In addition, ashaft protruding unit of the other end side 193A which protrudes to thesheet 114 side from the base stand unit 199, similarly, is provided inthe fixed shaft of the other end side 193 which is fixed to the otherend side of the base stand unit 199. The shaft protruding unit of oneend side 191A and the shaft protruding unit of the other end side 193Aare used when positioning a cap 172 with respect to the recording unit118, which will be described later.

According to the embodiment, the width direction X as the longitudinaldirection of the recording unit 118 is set to a direction whichintersects both directions of the transport direction Y of a sheet 114using the transport unit 115 and a direction which goes along a normalline of the recording face 114P of the sheet 114. In addition, thethrough hole of one end side 151 and the through hole of the other endside 152 which are provided at both end portions in the longitudinaldirection, respectively, are set to through holes which performspenetrating in a direction which goes along the normal line of therecording face 114P, and shaft line directions of the insertion shaft ofone end side 191 and the insertion shaft of the other end side 192 (indetail, the fixed shaft of the other end side 193) which are insertionshafts inserted into the through hole are set to directions which goalong the normal line of the recording face 114P of the sheet 114.

Accordingly, the recording unit 118 moves along the normal linedirection of the recording face 114P of the sheet 114 when the throughhole of one end side 151 and the through hole of the other end side 152which are provided at both sides in the longitudinal direction (widthdirection X) move in shaft line directions of the insertion shaft of oneend side 191 and the insertion shaft of the other end side 192 (indetail, eccentric cylindrical member 194) which are respectivelyinserted thereto. As a result, in the recording unit 118, a size of aninterval with the sheet 114 (or support table 117) which is transportedon the transport path 113 is adjusted due to a movement thereof withrespect to the sheet 114 (or support table 117) in which the recordingunit is separated from the sheet or gets closer to the sheet.

Subsequently, a structure of adjusting an interval between the recordingunit 118 and the sheet 114 will be described. In addition, the shaftline directions of the insertion shaft of one end side 191 and theinsertion shaft of the other end side 192, that is, a direction in whichthe recording unit 118 can move will be described as a movementdirection A.

As illustrated in FIGS. 13 and 14, in the recording unit 118, at leastone engaged portion 157, and a plurality of follower portions 158 areformed by being protruded from a side face on the upstream side of therecording unit 118 in the transport direction Y. In addition, accordingto the embodiment, two sets of the engaged portion 157 and the followerportion 158 are provided with an interval in the width direction X,respectively, by setting one engaged portion 157 and one followerportion 158 which are adjacent to each other in the width direction X toone set.

The engaged portion 157 and the follower portion 158 are provided sothat positions thereof are deviated in the width direction X and themovement direction A, and are formed so that the lower face of thefollower portion 158 which is the sheet 114 side is located at aposition which is separated from the sheet 114, compared to a top faceof the engaged portion 157 which is the side opposite to the sheet 114.

In addition, a moving unit 160 which relatively moves the recording unit118 with respect to the recording face 114P (printing face) which is atleast one face of the front face and the rear face of the sheet 114 isprovided on a side of the recording unit 118 on which the engagedportion 157 and the follower portion 158 are formed, by moving therecording unit 118 through the follower portion 158.

That is, as illustrated in FIG. 14, the moving unit 160 includes anadjusting motor 161 which can perform a bidirectional rotation of anormal rotation and a reversal rotation, a transmission mechanism 162for transmitting a driving force of the adjusting motor 161, and arotating shaft 163 which can perform a bidirectional rotation of anormal rotation and a reversal rotation due to a driving force which istransmitted to the transmission mechanism 162. The rotating shaft 163 isprovided so as to be extended along the width direction X, and aplurality of (two in the embodiment) cams 165 are provided in therotating shaft 163 with an interval in the width direction X so as tocorrespond to each follower portion 158.

As illustrated in FIGS. 13 and 14, the cam 165 is formed in anapproximate disk shape, and is set to an eccentric cam into which therotating shaft 163 is inserted at a position different from a center. Inaddition, the cam 165 moves the recording unit 118 along the movementdirection A through the follower portion 158, by rotating along with therotating shaft 163 while being in contact with the follower portion 158as a cam follower. That is, the cam 165 adjusts a position of therecording unit 118 in the movement direction A, by moving the recordingunit 118 to the higher part along the movement direction A so as to beseparated from the sheet 114 (support table 117), or moving therecording unit to the lower side along the movement direction A so as tobe close to the sheet 114.

In addition, at least one engaging unit 166 which can be engaged withthe engaged portion 157 of the recording unit 118, by rotating alongwith the rotating shaft 163 is provided in the rotating shaft 163 so asto correspond to the engaged portion 157. That is, according to theembodiment, two engaging units 166 are provided with an interval in thewidth direction X.

The engaging unit 166 is configured of a base end portion 167 which issupported by the rotating shaft 163, and a hook unit 168 which is formedin a shape which is bent with respect to the base end portion 167. Inaddition, in the engaging unit 166, a thickness at a tip end of the hookunit 168 is set to be larger than those in other portions. In addition,a distance (inner diameter) from a center of the rotating shaft 163 toan inner face of the hook unit 168 which is engaged with the engagedportion 157 is set to the same dimension as the outer dimension of thecam 165 in the same direction as the distance (inner diameter).

According to the embodiment, the engaged portion 157 and the rotatingshaft 163 are provided in line along the movement direction A. That is,the engaged portion 157 is formed so as to be extended onto the rotatingshaft 163, and the rotating shaft 163 is located between the engagedportion 157 and the transport path 113. For this reason, when theadjusting motor 161 performs normal driving from the state illustratedin FIG. 13, the engaging unit 166 performs a normal rotation(counterclockwise rotation in FIG. 13) along with a rotation of therotating shaft 163. In addition, as illustrated in FIG. 14, the rotatingshaft 163, the engaged portion 157, and the hook unit 168 of theengaging unit 166 align along the movement direction A. Accordingly, inthe movement direction A, the engaging unit 166 can engage with theengaged portion 157 in a direction which is opposite to a side on whichthe sheet 114 (support table 117) is located (higher side in FIG. 13).

According to the embodiment, at least one bearing among bearings whichrotatably support both sides of the rotating shaft 163 is set so as tomove along the movement direction A of the recording unit 118. That is,as illustrated in FIG. 14, a bearing movement mechanism in which thebearing 169 on one end side (−X side) in the width direction X movesalong the movement direction A due to a rotation of an adjusting screw169A is configured.

The bearing 169 on one end side vertically moves in the movementdirection A by rotating the adjusting screw 169A, and one end side ofthe rotating shaft 163 which is pivotally supported by the bearing 169on one end side is vertically moved with respect to the other end side,relatively, using the bearing movement mechanism which is configured inthis manner. The cam 165 on one end side vertically moves along themovement direction A on one end side of the recording unit 118 throughthe follower portion 158 along with the vertical movement of therotating shaft 163 on one end side. In this manner, the recording unit118 is adjusted so as to be parallel to the sheet 114 (support table117) in the width direction X.

As illustrated in FIG. 13, the liquid ejecting head 170 in which aplurality of (only one is illustrated in FIG. 13) nozzles N which ejectink are formed is provided on the lower face of the recording unit 118which is the support table 117 side. In addition, the printer 111includes the cap 172 which can close a space in which nozzles N arepresent by being in contact with the recording unit 118 from the lowerface side which is the support table 117 side, and a switching mechanism171 which switches the cap 172 and the support table 117 by causing thecap and the support table to relatively move with respect to therecording unit 118.

The cap 172 includes a rectangular box-shaped cap holder 173 with a baseof which a higher end which is the recording unit 118 side is open, anda box-shaped cap forming member 173A with a base which is arrangedthrough at least one spring in the inside of the cap holder 173. In thecap holder 173, an extension unit of one end side 174 which is extendedupward along the movement direction A and an extension unit of the otherend side 175 are respectively formed at both sides in the widthdirection X thereof, a hole portion of one end side 174A is provided inthe extension unit of one end side 174, and a hole portion of the otherend side 175A is provided in the extension unit of the other end side175 (refer to FIG. 16).

The switching mechanism 171 includes a moving motor M which can performa bidirectional rotation of a normal rotation and a reversal rotation, ascrew shaft 176 which rotates in both directions of a normal directionand a reversal direction along with the rotation of the moving motor M,and a cap side slider 178 and a support table side slider 179 which arescrewed to the screw shaft 176. In addition, the cap side slider 178 isconnected to the cap 172 using a first outside ring member 181 a and afirst inside ring member 181 b which are provided as a pair. Inaddition, the support table side slider 179 is connected to the supporttable 117 using a second outside ring member 182 a and a second insidering member 182 b which are provided as a pair.

In a wall member 183, a cap side guide rail 184 and a support table sideguide rail 185 are formed as elongated holes which are provided so as toform a linear portion and a gentle S-shaped curved portion. In addition,the cap side guide rail 184 and the support table side guide rail 185are formed so as to be line symmetric with respect to a reference line(not illustrated) which is extended in the movement direction A based ona position in which the recording unit 118 is provided in the transportdirection Y. That is, in the cap side guide rail 184 and the supporttable side guide rail 185, each end portion on a center side which isthe reference line side is located at the higher which is close to therecording unit 118 in the movement direction A, and each end portion onthe outer side which is separated from the reference line is formed soas to be located on the lower side which is separated from the recordingunit 118 in the movement direction A.

In addition, a cap side guide unit 186 which is provided in the firstoutside ring member 181 a which is connected to the cap 172 is insertedinto the cap side guide rail 184 so as to move along the cap side guiderail 184. Meanwhile, a support table side guide unit 187 which isprovided in the second outside ring member 182 a which is connected tothe support table 117 is inserted into the support table side guide rail185 so as to move along the support table side guide rail 185.

As illustrated in FIGS. 15 and 16, in the cap 172, switching of aposition of the support table 117 with respect to the recording unit 118is performed due to an operation of the switching mechanism 171. Thatis, when the moving motor M performs a reverse driving in the statewhich is illustrated in FIG. 13, the cap side slider 178 and the supporttable side slider 179 move along the shaft direction of the screw shaft176 so as to be separated from the moving motor M.

Then, as denoted by the two-dotted chain line in FIG. 15, first, the cap172 which is located at a non-closing position D moves to anintermediate position G in a direction opposite to the transportdirection Y along the transport direction Y, when the cap side guideunit 186 moves along the linear portion of the cap side guide rail 184.Subsequently, when the cap side guide unit 186 moves along the curvedportion of the cap side guide rail 184, the cap 172 rises along themovement direction A from the intermediate position G, and moves to aclosing position B which comes into contact with the lower face side ofthe recording unit 118. At this time, the support table 117 which islocated at a support position E in FIG. 13 moves to a non-supportingposition C in FIG. 15 in advance of a movement of the cap 172 to theintermediate position G due to a movement of the support table sideslider 179.

When the moving motor M performs normal driving in this state, the capside slider 178 and the support table side slider 179 move along theshaft direction of the screw shaft 176 so as to be close to the movingmotor M along with a rotation of the moving motor M. Then, asillustrated in FIG. 13, the cap 172 moves so as to be separated from therecording unit 118, and moves to the non-closing position D which isdifferent from the closing position B through the intermediate positionG. Meanwhile, the support table 117 moves so as to be close to therecording unit 118, and moves to the support position E which supportsthe sheet 114. Accordingly, the switching mechanism 171 moves the cap172 between the closing position B and the non-closing position D, andmoves the support table 117 between the non-supporting position C andthe support position E.

As illustrated in FIGS. 15, 16, and 17, according to the embodiment, thecap 172 is positioned with respect to the recording unit 118 whenperforming an upward movement along the movement direction A toward theclosing position B from the intermediate position G. That is, a shaftprotruding unit of one end side 191A of an insertion shaft of one endside 191 which is fixed to the base stand unit 199 is inserted into ahole portion of one end side 174A which is provided at an extension unitof one end side 174 of the cap 172, and a shaft protruding unit of theother end side 193A which is provided in an insertion shaft of the otherend side 192 is inserted into a hole portion of the other end side 175Awhich is provided in an extension unit of the other end side 175 of thecap 172. As a result, the cap 172 is positioned in the transportdirection Y and the width direction X using the insertion shaft of oneend side 191 and the insertion shaft of the other end side 192 (indetail, the fixed shaft of the other end side 193) which are fixed tothe base stand unit 199.

Meanwhile, as illustrated in FIGS. 17 and 18, the recording unit 118 ispositioned using the insertion shaft of one end side 191 and theinsertion shaft of the other end side 192 (in detail, eccentriccylindrical member 194). That is, as illustrated by being enlarged in arectangular region which is denoted by a mark S1 in FIG. 18, adifference between the external dimension H1 of the first through hole151A on one end side of the recording unit 118 and the externaldimension J1 of the insertion shaft of one end side 191 which is locatedin the first through hole 151A is set to a minimum difference indimension which is caused by a manufacturing error, for example. As aresult, movements of one end side of the recording unit 118 in bothdirections of the transport direction Y and the width direction X aresuppressed using the insertion shaft of one end side 191 which isinserted into the first through hole 151A of the first bush 155, and theone end side of the recording unit is positioned.

As illustrated in the rectangular region which is denoted by a mark S2by being enlarged in FIG. 18, a difference between the dimension H2between parallel edge portions of the through hole of the other end side152 of the recording unit 118 and the external dimension J2 of theeccentric cylindrical member 194 which is located in the through hole ofthe other end side 152 is set to a minimum difference in dimension whichis caused by a manufacturing error, for example. As a result, a movementof the other end side of the recording unit 118 in the transportdirection Y is suppressed using the eccentric cylindrical member 194 ofthe insertion shaft of the other end side 192 which is inserted into thethrough hole of the other end side 152, and the one end side of therecording unit is positioned.

As illustrated in the region which is denoted by the mark S3 by beingenlarged in FIG. 18, in the second through hole 151B on one end side ofthe recording unit 118, similarly to the through hole of the other endside 152, a difference between the dimension H3 between the paralleledge portions and the external dimension J3 of the insertion shaft ofone end side 191 which is located in the second through hole 151B is setto a minimum difference in dimension which is caused by a manufacturingerror, for example. As a result, a movement of the one end side of therecording unit 118 in the transport direction Y is suppressed also usingthe insertion shaft of one end side 191 which is inserted into thesecond through hole 151B of the second bush 156. For this reason, amovement of the recording unit 118 to the transport direction Y issuppressed in the first through hole 151A, the second through hole 151B,and the through hole of the other end side 152 which respectively arearranged at three positions which are different when viewed from thetransport direction Y, and a rotation (inclination) around the shaftline which goes along the width direction X is suppressed.

Accordingly, as illustrated in FIG. 17, the recording unit 118 ispositioned using the insertion shaft of one end side 191 and theinsertion shaft of the other end side 192 which are fixed to the basestand unit 199 in both directions of the transport direction Y and thewidth direction X, and the cap 172 is positioned using the insertionshaft of one end side 191 and the insertion shaft of the other end side192 which are fixed to the base stand unit 199. In other words, the cap172 is positioned with respect to the recording unit 118 through theinsertion shaft of one end side 191 and the insertion shaft of the otherend side 192 which are fixed to the base stand unit 199. When the cap172 is positioned with respect to the recording unit 118 in this manner,the cap 172 comes into contact with the liquid ejecting head 170 whichis provided on the lower face of the recording unit 118 in anappropriate state in which a positional deviation is suppressed in theclosing position B, and cover a space in which the recording unit 118 ispresent.

When the cap 172 is located at the closing position B, the recordingunit 118 is pressed from the lower part along the movement direction Ausing the box-shaped cap forming member 173A with a base which isarranged through at least one spring (not illustrated) in the cap holder173. Therefore, according to the embodiment, as illustrated in FIG. 15,the rotating shaft 163, the engaged portion 157, and hook unit 168 ofthe engaging unit 166 are caused to be aligned, by causing the engagingunit 166 to perform a normal rotation along with a rotation of therotating shaft 163. By doing so, the engaging unit 166 engages with theengaged portion 157 in a direction opposite to the side on which thesheet 114 (support table 117) is located. Due to the engagement with theengaged portion 157 from the higher part of the engaging unit 166, amovement of the recording unit 118 to the higher part in the movementdirection A is suppressed when the recording unit 118 is pressed fromthe lower side on the sheet 114 side, using the cap forming member 173A.

As illustrated in FIG. 18, in the liquid ejecting head 170 which isincluded in the recording unit 118 is configured by including aplurality of (six, here) individual heads of which both ends in thelongitudinal direction thereof (width direction X) are set so as to havean external shape which is an approximate parallelogram with an obliqueside which is inclined in a direction orthogonal to the longitudinaldirection, and are provided side by side along the longitudinaldirection of the recording unit 118. In the liquid ejecting head 170, aplurality of nozzle columns NR in which a plurality of nozzles N arearranged in line in parallel to an oblique side 170R of a parallelogramof the liquid ejecting head 170 are provided in line with apredetermined interval in the longitudinal direction of the recordingunit 118. Accordingly, the cap 172 is configured so that the cap formingmember 173A in the cap holder 173 is formed as a plurality of box-shapedindividual caps with bases of which external shapes are approximateparallelograms, according to the liquid ejecting head 170 which is setto the approximate parallelogram, and a plurality of individual capscome into contact with the liquid ejecting head 170 which is configuredby including a plurality of individual heads (refer to FIG. 16).

As illustrated in FIG. 18, the recording unit 118 has an external shapewhich is approximate rectangular shape when viewed from the movementdirection A, and the liquid ejecting head 170 which is set to anapproximate parallelogram is provided in the rectangular shape. For thisreason, approximately triangular regions R in which the liquid ejectinghead 170 is not provided are respectively formed at both ends of theflat plate unit 154 in the longitudinal direction in the recording unit118, at positions which are deviated from each other in the transversedirection (transport direction Y) which is orthogonal to thelongitudinal direction. Therefore, according to the embodiment, in theapproximately triangular regions R at both ends in the longitudinaldirection, the through hole of one end side 151 is formed at one side,and the through hole of the other end side 152 is formed on the otherside, respectively. By doing so, the through hole of one end side 151and the through hole of the other end side 152 are arranged so as tooverlap with the liquid ejecting heads 170 (individual heads) which areclosest to one end portion side and the other end portion side in thelongitudinal direction of the recording unit 118 among the liquidejecting heads 170, in the transport direction Y of the recording unit118. As a result, it is possible to form a through hole for positioningthe recording unit 118 without making the external shape of therecording unit 118 large by stretching the shape in the longitudinaldirection or the transverse direction, and it is possible to prevent anexternal size of the printer 111 from increasing by saving a space forarranging a mechanism for performing an inclination correction of therecording unit 118.

As illustrated in FIG. 19, the base stand unit 199 according to theembodiment includes a base stand of one end side 199A to which theinsertion shaft of one end side 191 is fixed, a base stand of the otherend side 199B to which the insertion shaft of the other end side 192 isfixed, and a connection base stand 199C which connects the base stand ofone end side 199A and the base stand of the other end side 199B, and isformed in a U shape when viewed in the transport direction Y. Inaddition, the base stand of one end side 199A and the base stand of theother end side 199B are formed using an injection molding process of ametal material (for example, aluminum die cast), and the base stand unit199 has a high rigidity in which, for example, bending or twistingdeformation rarely occurs.

A bearing unit 199J in which the driving roller 134 a of the fourth pairof supply rollers 134 as the transport unit 115 which transports thesheet 114 to the recording unit 118 is pivotally supported in a rotatingmanner is provided in the base stand unit 199. Accordingly, a relativeposition of the insertion shaft of one end side 191 and the insertionshaft of the other end side 192 (in detail, the fixed shaft of the otherend side fixed shaft 193) which are fixed to the base stand unit 199 isstably maintained without being changed with respect to the sheet 114which is transported in the transport direction Y using the drivingroller 134 a which is pivotally supported by the bearing unit 199J ofthe base stand unit 199 with a high rigidity. In addition, according tothe embodiment, it is configured so that a bearing unit which pivotallysupport the driving roller of the first pair of transport rollers 141which is located on the immediately downstream side in the transportdirection Y with respect to the recording unit 118 is also provided inthe base stand unit 199, a positional deviation between two drivingrollers which are located in front and behind of the recording unit 118is suppressed, and the sheet 114 is stably transported in the transportdirection Y.

Therefore, according to the embodiment, it is possible to adjust aposition of the recording unit 118 with respect to the sheet 114 whichis transported using the driving roller 134 a of the fourth pair ofsupply rollers 134, specifically, an inclination of the recording unit118 in the longitudinal direction from the width direction X which isorthogonal to the transport direction Y of the sheet 114, using theinsertion shaft of one end side 191 and the insertion shaft of the otherend side 192 which are fixed to the base stand unit 199. That is, theinsertion shaft of one end side 191 and the insertion shaft of the otherend side 192 as guiding shafts when moving the recording unit 118 alongthe movement direction A with respect to the recording face 114P of thesheet 114 using the moving unit 160 are used as shafts for adjusting aninclination of the recording unit 118 in the longitudinal direction withrespect to the width direction X.

Subsequently, operations in the embodiment, that is, operations foradjusting an inclination of the recording unit 118 in the widthdirection X will be described. In the following description, first, theeccentric cylindrical member 194 of the insertion shaft of the other endside 192 will be described, and the operations for adjusting aninclination of the recording unit 118 will be described thereafter.

As illustrated in FIGS. 20A and 20B, the eccentric cylindrical member194 includes a circular hole portion 195 with a radius Ra which has acenter shaft C2 of which a shaft line is deviated by a predetermineddimension Lc from a center shaft C1 of a cylindrical face 194S with aradius Rc which is included as an outer face, and the fixed shaft of theother end side 193 is inserted into the hole portion 195. In addition, afixing screw 196 such as a so-called “set screw”, for example, isattached to two portions of the cylindrical face 194S in the shaft linedirection of the center shaft C1 as a fixing member.

According to the embodiment, the fixing screw 196 is attached to aposition opposite to a position of the shaft line of the center shaft C2of the hole portion 195 to which the fixed shaft of the other end side193 is inserted with respect to the shaft line of the center shaft C1 ofthe cylindrical face 194S of the eccentric cylindrical member 194. As aresult, in the eccentric cylindrical member 194, the fixing screw 196 isattached to a position in which a thickness of the member in a sectionwhich is cut on a face intersecting the shaft line of the center shaftC1 of the cylindrical face 194S is a maximum. In addition, the fixingscrew 196 fastens the fixed shaft of the other end side 193 which isinserted into the hole portion 195 in the hole portion 195 so as to beseparated from the shaft line of the center shaft C1 of the cylindricalface 194S by being attached to the eccentric cylindrical member 194 in arotating manner.

Accordingly, even when a gap occurs between the fixed shaft of the otherend side 193 which is inserted into the hole portion 195 and the holeportion 195, the gap causes an amount of deviation of the center shaftC1 of the cylindrical face 194S of the eccentric cylindrical member 194with respect to the center shaft of the other end side 193 to beincreased, when the fixing screw 196 which is attached to the eccentriccylindrical member 194 fastens the fixed shaft of the other end side193. That is, fastening of the fixing screw 196 functions so as to makean eccentric amount of the eccentric cylindrical member 194 with respectto the fixed shaft of the other end side 193 to be increased.

According to the embodiment, the eccentric cylindrical member 194 isfixed in a state in which a rotation of the cylindrical face 194S withrespect to the fixed shaft of the other end side 193 is restrained, whenthe fixing screw 196 is rotated in a state in which the fixed shaft ofthe other end side 193 is inserted into the hole portion 195 of theeccentric cylindrical member 194, and the fixed shaft of the other endside 193 is fastened to the hole portion 195. That is, according to theembodiment, the eccentric cylindrical member 194 is attached to thefixed shaft of the other end side 193 using the fixing screw 196 in astate in which a rotation torque around the fixed shaft of the other endside 193 is set to a predetermined torque value or more, and a rotationthereof is restrained.

Accordingly, it is possible to forcibly rotate the eccentric cylindricalmember 194 around the fixed shaft of the other end side 193 using arotation torque of which a value is a predetermined torque value, andthe eccentric cylindrical member 194 is maintained at a state in which arotation is restrained, that is, a state in which the eccentriccylindrical member 194 does not easily rotate with respect to the fixedshaft of the other end side 193 in a state in which the rotation isstopped. In other words, the fixing screw 196 attaches the eccentriccylindrical member 194 to the fixed shaft of the other end side 193 sothat, even when the eccentric cylindrical member 194 is forcibly rotatedwith respect to the fixed shaft of the other end side 193, a state inwhich a rotation is restrained is to be maintained after the rotation.

According to the embodiment, since the eccentric cylindrical member 194is rotated in a state in which the eccentric cylindrical member 194 isattached to the fixed shaft of the other end side 193, in the eccentriccylindrical member 194, at least one cut face 194C which is parallel tothe shaft line of the center shaft C1 of the cylindrical face 194S isprovided at at least a part of the cylindrical face 194S. Specifically,in the cylindrical face 194S, a pair of the cut face 194C is provided atboth sides on which the fixing screw 196 is interposed therebetween, andwhich are the higher side end portion in the movement direction A so asto be parallel to each other. Accordingly, it is possible to forciblyrotate the eccentric cylindrical member 194 by gripping the cut face194C using a tool such as a wrench, and adjusting of inclination of therecording unit 118 is performed by forcibly rotating the eccentriccylindrical member 194.

Subsequently, adjusting of inclination of the recording unit 118 will bedescribed with reference to FIGS. 21A and 21B. In FIGS. 21A and 21B, forease of descriptions, each constituent element with a mark isschematically illustrated.

As illustrated in FIG. 21A, a case is assumed in which the recordingunit 118 is in an inclined state in which the other end side (+X side)is located on the upstream side in the transport direction Y withrespect to one end side (−X side) in the width direction X whichintersects (orthogonal, here) the transport direction Y of the sheet 114which is transported using the driving roller 134 a. In such a case, astate in which intervals of the nozzles N which are formed in the liquidejecting head 170 in the width direction X become uneven occurs.

That is, an interval of each nozzle N in the width direction X which isviewed in the transport direction Y is uneven, and for example, asdenoted by the nozzles Na and Nb in FIG. 21A, an interval between twonozzles N between the nozzle columns NR becomes narrower than aninterval between nozzles N in the nozzle column NR. Alternatively,though it is not illustrated here, when the recording unit 118 is in aninclined state in which the other end side (+X side) is located on thedownstream side in the transport direction Y with respect to one endside (−X side) in the width direction X, an interval between two nozzlesN which are located between the nozzle columns NR becomes wider than aninterval between nozzles N in the nozzle column NR. For this reason, forexample, there is a concern that black stripes (or white stripes), orthe like, may occur in an image which is recorded on the sheet 114 usingthe recording unit 118, and a recording quality may deteriorate.

Therefore, as illustrated in FIG. 21B, an inclination correction of therecording unit 118 is performed so that the longitudinal direction ofthe recording unit 118 is set to the width direction X which isorthogonal to the transport direction Y of the sheet 114 which istransported using the driving roller 134 a.

That is, in the insertion shaft of the other end side 192 which isinserted into the through hole of the other end side 152, the eccentriccylindrical member 194 is rotated with respect to the fixed shaft of theother end side 193. As an example, the eccentric cylindrical member 194is rotated in clockwise when viewed from the surface side of a paperface as denoted by an outline arrow from a position which is denotedusing hatching in FIG. 21A. Due to the rotation, the eccentriccylindrical member 194 moves to a position denoted hatching in FIG. 21B,and the other end side (+X side) of the recording unit 118 is moved tothe downstream side in the transport direction Y by an eccentric amountfrom the center shaft of the fixed shaft of the other end side 193 atthe most, by setting the fixed shaft of the other end side 193 as areference.

At this time, the one end side (−X side) of the recording unit 118 ispositioned in both directions of the transport direction Y and the widthdirection X using the insertion shaft of one end side 191 which isinserted into the through hole of one end side 151. For this reason, therecording unit 118 rotates (oscillates) using the insertion shaft of oneend side 191 as a center shaft of a rotation (reference shaft).Accordingly, it is possible to adjust a movement amount of the other endside (+X side) of the recording unit 118 along the transport direction Yby adjusting the rotation amount of the eccentric cylindrical member194. The recording unit 118 rotates (oscillates) around the insertionshaft of one end side 191, and an inclination of the recording unit 118in the longitudinal direction with respect to the width direction Xwhich is orthogonal to the transport direction Y of the sheet 114 isadjusted.

In this manner, since it is possible to adjust an inclination of therecording unit 118 in the longitudinal direction, it is not necessary toadopt a configuration in which the eccentric cylindrical member 194 iscaused to come into contact with the outer edge of the recording unit118, and it is possible to save a space for arranging the eccentriccylindrical member 194. In addition, when the longitudinal direction ofthe recording unit 118 matches the width direction X which is orthogonalto the transport direction Y, intervals of nozzles N which are formed inthe liquid ejecting head 170 in the width direction X become even. Forexample, as denoted by the nozzles Na and Nb in FIG. 21B, in eachinterval of each nozzle N in the width direction X which is viewed inthe transport direction Y, an interval between two nozzles N which arelocated between nozzle columns NR, and an interval between each ofnozzles N in the nozzle column NR become same. For this reason, forexample, in an image which is recorded on the sheet 114 using therecording unit 118, it is possible to suppress an occurrence of a whitestripe, a black stripe, or the like.

In a state in which an inclination of the recording unit 118 is adjustedso that intervals between nozzles N which are formed in the liquidejecting head 170 become even in the width direction X, it is not aproblem even if the longitudinal direction of the recording unit 118does not necessarily match the width direction X which is orthogonal tothe transport direction Y.

As another operation in the embodiment, there is a moving operation inwhich the recording unit 118 is smoothly moved, when being in a state inwhich a distance (gap) between the recording face 114P of the sheet 114which is transported on the support table 117 and the liquid ejectinghead 170 of the recording unit 118 is even along the width direction X,that is, when the recording unit 118 is adjusted to a parallel state.

The moving operation will be described with reference to FIGS. 22A and22B. In addition, in FIGS. 22A and 22B which are referred to here, forease of descriptions, each constituent element with a mark isschematically illustrated.

As illustrated in FIG. 22A, a case is assumed in which the recordingunit 118 is in an inclined state in which the one end side (−X side) isclose to the recording face 114P side by being lowered compared to theother end side (+X side) in the width direction X which intersects(orthogonal) the transport direction Y with respect to the recordingface 114P of the sheet 114 which is transport on the support table 117.In such a case, since ink (not illustrated) which is ejected from theliquid ejecting head 170 reaches the recording face 114P early on theone end side (−X side) compared to the other end side (+X side), thereis a concern that distortion may occur in an image which is printed onthe recording face 114P due to a time difference until the ink reachesthe recording face 114P. Therefore, as illustrated in FIGS. 22A and 22B,the bearing 169 of one end side is raised with respect to the base standunit 199 by turning the adjusting screw 169A on the one end side (−Xside) of the recording unit 118, and one end side of the rotating shaft163 which is pivotally supported by the bearing 169 on one end side israised.

As a result, as illustrated in FIG. 22B, the cam 165 on one end sidewhich is provided in the rotating shaft 163 is moved upward along themovement direction A on one end side of the recording unit 118 throughthe follower portion 158 when the rotating shaft 163 is raised. Therecording unit 118 is adjusted so as to be parallel to the sheet 114(support table 117) in the width direction X when the one end side israised.

At this time, the recording unit 118 moves to the higher part on one endside of the recording unit 118 in a state in which positions in bothdirections of the transport direction Y and the width direction X arepositioned using the circular first through hole 151A of the first bush155 which is provided in the cylindrical unit 153, and the insertionshaft of one end side 191 which is inserted into the first through holewith a small gap. For this reason, the recording unit 118 relativelyrotates in clockwise, when viewed from the upstream side, in thetransport direction Y around the first bush 155. Along with the rotationin clockwise of the recording unit 118 around the first bush 155, thesecond bush 156 which is provided in the cylindrical unit 153 movestoward a direction on the other end side (+X side) in the longitudinaldirection of the recording unit 118, and the through hole of the otherend side 152 which is provided on the flat plate unit 154 also movestoward a direction on the other end side (+X side) in the longitudinaldirection of the recording unit 118.

At this time, since the second through hole 151B of the second bush 156is set to a long circular hole with a parallel edge portion L3 whichgoes along the longitudinal direction (width direction X) of therecording unit 118, the second bush 156 smoothly moves without anoccurrence of scooping out between the second through hole 151B and theinsertion shaft of one end side 191 which is inserted into the secondthrough hole 151B. In addition, since the through hole of the other endside 152 is also set to a long circular hole with a parallel edgeportion L2 which goes along the longitudinal direction (width directionX) of the recording unit 118, the flat plate unit 154 of the recordingunit 118 in which the through hole of the other end side 152 is providedsmoothly moves without an occurrence of scooping out between the throughhole of the other end side 152 and the insertion shaft of the other endside 192 which is inserted into the through hole of the other end side152.

The length of the parallel edge portion which goes along the respectivelongitudinal directions (width direction X) of the second through hole151B and the through hole of the other end side 152 is set to a lengthwith which the recording unit 118 can be smoothly moved when beingadjusted to an even state (parallel state) along the width direction Xusing the bearing movement mechanism.

According to the above described embodiments, it is possible to obtainthe following effects.

(1) Since the through hole of one end side 151 and the through hole ofthe other end side 152 are respectively formed in approximatelytriangular regions R (refer to FIG. 18) on both sides of the recordingunit 118 in the longitudinal direction, it is possible to arrange amechanism which adjusts an inclination of the recording unit 118 in thelongitudinal direction without making a shape of the recording unitlarge by extending the appearance of the recording unit 118 in thelongitudinal direction or the transverse direction.

It is possible to correct an inclination of the recording unit 118 withrespect to the width direction X which is orthogonal to the transportdirection Y of the sheet 114 which is transported by the transport unit115 without urging the recording unit 118 using an urging member, usinga through hole, and an insertion shaft (for example, eccentriccylindrical member 194) which is inserted into the through hole. As aresult, since abrasion of the through hole and the insertion shaft issuppressed, and it is possible to appropriately perform an inclinationcorrection of the recording unit 118, deterioration in recording quality(for example, image quality) can be suppressed. In addition, it ispossible to suppress deterioration in recording quality, since there isno vibration of the recording unit 118 which is caused by the urgingmember.

(2) Since it is possible to suppress a decreases in eccentric amountwhen fixing the eccentric cylindrical member 194 to the fixed shaft ofthe other end side 193 using the fixing screw 196, it is possible toappropriately perform an inclination correction of the recording unit118.

(3) Since it is possible to easily determine a rotation position of theeccentric cylindrical member 194 with respect to the fixed shaft of theother end side 193 when fixing the eccentric cylindrical member 194 tothe fixed shaft of the other end side 193 using the cut face 194C, it ispossible to appropriately perform an inclination correction of therecording unit 118. In addition, it is possible to easily rotate theeccentric cylindrical member 194 around the fixed shaft of the other endside 193 using the cut face 194C.

(4) Since the insertion shaft of one end side 191 and the insertionshaft of the other end side 192 guides a movement of the recording unit118 when the recording unit 118 is moved along the movement direction A,it is not necessary to separately provide a guiding shaft when therecording unit 118 is relatively moved with respect to the recordingface 114P of the sheet 114. Accordingly, it is possible to prevent astructure of the printer 111 from being complicated.

(5) When the recording unit 118 is adjusted so as to be parallel to therecording face 114P of the sheet 114, even when movement amounts of therecording unit 118 toward the movement direction A are different at bothend portions in the longitudinal direction, it is possible for theinsertion shaft of one end side 191 to smoothly move without beingscooped out in the second through hole 151B which is a long circularhole.

(6) Since a portion of the base stand unit 199 which is fixed to theinsertion shaft of one end side 191 and the fixed shaft of the other endside 193, and a portion of the base stand unit 199 at which the bearingunit 199J is provided are integrated, it is possible to suppress apositional deviation of the insertion shaft of one end side 191 and theinsertion shaft of the other end side 192 (the fixed shaft of the otherend side 193) with respect to the transport direction Y of the sheet 114using the driving roller 134 a. Accordingly, it is possible toaccurately adjust an inclination with respect to the width direction Xwhich is orthogonal to the transport direction Y for the sheet 114 whichis transported using the driving roller 134 a.

(7) Since the insertion shaft of one end side 191 and the insertionshaft of the other end side 192 position the cap 172 with respect to therecording unit 118, it is not necessary to separately provide apositioning member with respect to the recording unit 118 when the cap172 covers the recording unit 118. Accordingly, it is possible toprevent the structure of the printer 111 from being complicated.

In addition, the above described embodiment may be modified to differentembodiments as follow.

In the above described embodiment, it is preferable that the insertionshaft of the other end side 192 positions the cap 172 with respect tothe recording unit 118 using the eccentric cylindrical member 194 whenthe cap 172 covers the recording unit 118. A modification example of apositioning structure of the cap 172 will be described with reference todiagrams.

As illustrated in FIGS. 23A and 23B, the eccentric cylindrical member194 in the modification example has the same center shaft as the centershaft of the cylindrical face 194S on the outer face, and the columnarmember 198 which is provided so as to be located on the lower side whichis the sheet 114 side of the base stand unit 199 is connected to thecylindrical face 194S of the eccentric cylindrical member 194 using anapproximately C-shaped connection unit 197. In addition, the fixed shaftof the other end side 193 which is inserted into the hole portion 195 ofthe eccentric cylindrical member 194 is fixed to eaves 199H which areapproximately circular, and are provided in the base stand unit 199without providing the shaft protruding unit of the other end side 193A(refer to FIG. 13) in the above described embodiment.

As denoted by a two-dotted chain line in FIG. 23B, the connection unit197 of the eccentric cylindrical member 194 is formed so as to rotate byapproximately a semicircle along the outer periphery of the eaves 199Hwhich are approximately half circular, and are provided in the basestand unit 199, when the eccentric cylindrical member 194 is rotatedusing the cut face 194C. As a result, the columnar member 198 which isconnected to the connection unit 197 rotates around the fixed shaft ofthe other end side 193 along with the eccentric cylindrical member 194when the eccentric cylindrical member 194 is rotated at a time ofadjusting an inclination of the recording unit 118. As a result, thecolumnar member 198 moves in the transport direction Y as denoted by thetwo-dotted chain line in FIG. 23B.

Therefore, in the modification example, positioning of the cap 172 withrespect to the recording unit 118 is performed using the columnar member198 which has the same center shaft as the center shaft of thecylindrical face of the eccentric cylindrical member 194, instead of theshaft protruding unit of the other end side 193A. That is, when thecolumnar member 198 is inserted into the hole portion of the other endside 175A which is provided in the extension unit of the other end side175 of the cap 172 at a time the cap 172 covers the recording unit 118,the cap 172 is positioned by being aligned with a center of thecylindrical face 194S of the eccentric cylindrical member 194 after arotation with respect to the recording unit 118 of which an inclinationin the transport direction Y is adjusted, due to the rotation of theeccentric cylindrical member 194.

In addition, the columnar member 198 moves in the transport direction Y,and moves also in the width direction X as denoted by the two-dottedchain line in FIG. 23B. Accordingly, it is preferable that the holeportion of the other end side 175A into which the columnar member 198 isinserted, and which is provided in the extension unit of the other endside 175 is set to an elongated hole with a linear parallel edge portionwhich goes along the longitudinal direction (width direction X) of thecap 172, similarly to the through hole of other end side 152.

According to the modification example, it is possible to obtain thefollowing effects, in addition to the effects (1) to (7) in the abovedescribed embodiment.

(8) Since it is possible to perform positioning with respect to therecording unit 118 when the cap 172 covers the recording unit 118according to a position of the recording unit 118 of which aninclination is adjusted, the cap 172 can cover the recording unit 118 ina state in which a positional deviation with respect to the recordingunit 118 is suppressed.

In the above described embodiment, the insertion shaft of one end side191 and the insertion shaft of the other end side 192 may notnecessarily position the cap 172 with respect to the recording unit 118when the cap 172 covers the recording unit 118. For example, positioningof the cap 172 may be performed using a positioning member which isseparately provided. As a matter of course, positioning of the cap 172is not necessary when the cap 172 is not provided.

In the above described embodiment, the liquid ejecting head 170 which isincluded in the recording unit 118 has a configuration in which aplurality of (six, here) individual heads of which both ends in thelongitudinal direction thereof (width direction X) are set so as to havean external shape which is an approximate parallelogram with an obliqueside which is inclined in a direction orthogonal to the longitudinaldirection are provided side by side along the longitudinal direction ofthe recording unit 118, however, it is not limited to this.

The modification example will be described with reference to schematicdiagrams illustrated in FIGS. 24A to 24D.

As illustrated in FIG. 24B, the liquid ejecting head 170 included in therecording unit 118 may have a zigzag arrangement in which each liquidejecting head 170 is arranged in zigzag in contrast with the liquidejecting head 170, the through hole of one end side 151, and the throughhole of the other end side 152 in the above described embodimentillustrated in FIG. 24A. In this case, the through hole of one end side151 and the through hole of the other end side 152 are respectivelyformed in rectangular regions K on both sides of the recording unit 118in the longitudinal direction which are illustrated in FIG. 24B, not thetriangular region R.

In this manner, similarly, it is possible to suppress an increase insize of the printer 111 by saving a space for arranging a mechanism forperforming an inclination correction of the recording unit 118.

In addition, as illustrated in FIGS. 24C and 24D, only the through holeof the other end side 152 may be formed in the triangular region R orthe rectangular region K. In addition, it is needless to say that onlythe through hole of one end side 151 may be formed in the triangularregion R or the rectangular region K. In this manner, similarly, it ispossible to obtain the effect of suppressing the increase in size of theprinter 111.

In the above described embodiment, the portion of the base stand unit199 to which the insertion shaft of one end side 191 as the fixed shaftof one end side, and the fixed shaft of the other end side 193 arerespectively fixed, and a portion of the base stand unit 199 in whichthe bearing unit 199J of the driving roller 134 a is provided may notnecessarily be integrated. For example, when it is a structure in whichthe insertion shaft of one end side 191 and the fixed shaft of the otherend side 193 are fixed in a state in which positional deviations withrespect to the sheet 114 which is transported using the driving roller134 a, the portion of the base stand unit 199 to which the insertionshaft of one end side 191 and the fixed shaft of the other end side 193are fixed, and the portion of the base stand unit 199 in which thebearing unit 199J of the driving roller 134 a is provided may beseparate bodies.

In the above described embodiment, a configuration in which the throughhole of one end side 151 into which the insertion shaft of one end side191 is inserted is set only to the first through hole 151A, and thesecond through hole 151B is not provided may be adopted. For example, itmay be a configuration in which the recording unit 118 is stably movedalong the movement direction A by making a length of the first throughhole 151A in the movement direction A of the recording unit 118 long.Alternatively, for example, it may be a configuration in which a supportmember which supports the recording unit 118 so as to be interposedbetween both sides in the transport direction Y is separately provided,and the recording unit 118 can be smoothly moved along the movementdirection A.

In the above described embodiment, the insertion shaft of one end side191 and the insertion shaft of the other end side 192 may notnecessarily be guiding shafts which guide a movement of the recordingunit 118 when the moving unit 160 moves the recording unit 118 along themovement direction A. That is, a guiding shaft which guides a movementof the recording unit 118 may be provided separately from the insertionshaft of one end side 191 and the insertion shaft of the other end side192.

In the above described embodiment, in the eccentric cylindrical member194, the cut face 194C which is parallel to the center shaft line of thecylindrical face 194S may not necessarily be provided at at least a partof the cylindrical face 194S. For example, when the cylindrical face194S is a face in which it is possible to rotate the eccentriccylindrical member 194 by gripping and turning the cylindrical faceusing a tool, the cut face is not necessary. For example, it may be aconfiguration in which a portion of the cylindrical face which isgripped using a tool is set to be nonslip by making a coefficient offriction between the cylindrical face and a tool large, by forming anirregular face at at least a part of the cylindrical face 194S.

In the above described embodiment, the fixing screw 196 as a fixingmember of the eccentric cylindrical member 194 may not necessarily beattached to a position opposite to a position of the center shaft lineof the fixed shaft of the other end side 193 with respect to the shaftline of the center shaft C1 of the cylindrical face 194S, in theeccentric cylindrical member 194. The fixing screw 196 may be attachedto any position when it is a position at which a rotation of theeccentric cylindrical member 194 with respect to the fixed shaft of theother end side 193 is restrained. In addition, the number of fixingscrews 196 is not limited to two, it may be one, or may be larger thantwo.

In the above described embodiment, the second through hole 151B as thethrough hole of one end side 151 and the through hole of the other endside 152 may not necessarily be a pair of parallel edge portions, andboth ends thereof may not necessarily be long circular shaped elongatedholes of semicircle edge portions. For example, the holes may berectangular elongated holes with a longitudinal direction along thelongitudinal direction of the recording unit 118. In brief, the holesmay have a shape in which a portion with a width which is approximatelythe same as a dimension of an outer diameter (diameter) of an insertionshaft which is inserted into a through hole has a predetermined lengthin which the shaft is not scooped out when adjusting an inclination,adjusting a parallel state, or the like, in the longitudinal directionof the recording unit 118, in the transverse direction which intersects(orthogonal) the longitudinal direction of the recording unit 118.

In the above described embodiment, the through hole of one end side 151is not necessarily arranged so as to overlap with the liquid ejectinghead 170 (individual head) which is closest to one end portion side inthe longitudinal direction of the recording unit 118 among the liquidejecting heads 170 in the transport direction Y of the recording unit118. For example, since the through hole of one end side 151 is a centershaft (reference shaft) of a rotation of the recording unit 118 whenperforming an inclination correction of the recording unit 118, spacesaving may be performed by making the shaft thin.

In the above described embodiment, a supply source of ink which isrecording liquid ejected from the recording unit 118 may be an inkaccommodating body which is provided inside the housing 112 of theprinter 111, for example. Alternatively, the supply source may be aso-called external-type ink accommodating body which is provided outsidethe housing 112. In particular, since it is possible to increase inkcapacity in a case of the external-type ink accommodating body, it ispossible to perform eject much more ink from the recording unit 118.

In addition, in a case in which ink is supplied to the recording unit118 from an ink accommodating body which is provided outside the housing112, it is necessary to pull around an ink supply tube for supplying inkfrom the outside of the housing 112. Accordingly, in this case, it ispreferable to provide a hole, a notch, or the like, for inserting theink supply tube in the housing 112. Alternatively, the ink supply tubemay be pulled into the housing 112 from the outside through a gap byproviding the gap in the housing 112. By doing so, it is possible toeasily supply ink to the recording unit 118 using an ink path of the inksupply tube.

In the above described embodiment, the recording apparatus 11, 11 a, andthe printer 111 may be liquid ejecting apparatuses which performrecording by ejecting or discharging fluid other than ink (includingliquid, liquid body in which particles of functional material aredispersed or mixed, fluid body such as gel, and solid body which can beejected as fluid body by being flown). For example, it may be a liquidejecting apparatus which perform printing by ejecting a liquid bodyincluding a material such as an electrode material, or a coloringmaterial (pixel material) which is used when manufacturing, for example,a liquid crystal display, an EL (electroluminescence) display, and asurface emission display in a form of dispersion, or dissolution. Inaddition, it may be a liquid ejecting apparatus which ejects a liquidbody such as gel (for example, physical gel), or a powdery granuleejecting apparatus (for example, toner jet-type printing apparatus)which ejects a solid body which is an example of powder (powderygranule) such as toner. In addition, it is possible to apply theinvention to any one of these fluid ejecting apparatuses. In thespecification, “fluid” does not include fluid which is formed only ofgas, and in the fluid, for example, liquid (including inorganic solvent,organic solvent, liquid, liquid resin, liquid metal (metallic melt), orthe like), a liquid body, a fluid body, a granular material (includinggranule and powder), and the like, are included.

The entire disclosure of Japanese Patent Application No. 2014-238088,filed Nov. 25, 2014 and 2014-248117, filed Dec. 8, 2014 and 2015-164506,filed Aug. 24, 2015 are expressly incorporated by reference herein.

What is claimed is:
 1. A recording apparatus comprising: a recordingunit which performs recording on a medium which is transported along atransport path; an accommodating unit which accommodates the recordingunit; a discharging unit which discharges the medium on which recordingis performed by the recording unit; and a support unit which is locatedat a higher part of the recording unit, receives and supports the mediumwhich is discharged by the discharging unit, and is openable or closablewith respect to the accommodating unit, wherein an access path throughwhich it is possible to access the recording unit from the higher partby causing the support unit to be opened is formed.
 2. The recordingapparatus according to claim 1, wherein a portion of the support unitwhich overlaps with the recording unit when viewed from above can beopened until the portion becomes smaller than that in a closed state. 3.A recording apparatus comprising: a recording unit which performsrecording on a medium which is transported along a transport path; anaccommodating unit which accommodates the recording unit; a dischargingunit which discharges the medium on which recording is performed by therecording unit; a support unit which is located at a higher part of therecording unit, receives and supports the medium which is discharged bythe discharging unit, and is openable or closable with respect to theaccommodating unit; and a path forming member which is arranged betweenthe support unit and the recording unit, and forms a reversing path onwhich the medium is reversed, wherein an access path through which it ispossible to access the recording unit from the higher part by causingthe path forming member to be opened in a state in which the supportunit is opened is formed.
 4. The recording apparatus according to claim3, wherein the path forming member is inclined so as to be high along adischarging direction in which the medium is discharged, and wherein anopening-closing fulcrum when the path forming member is opened or closedis located on the upstream side in the discharging direction.
 5. Therecording apparatus according to claim 3, wherein the path formingmember is detachably configured with respect to the accommodating unit.6. The recording apparatus according to claim 3, wherein the supportunit is inclined so as to be high along the discharging direction inwhich the medium is discharged, and wherein an opening-closing fulcrumwhen the support unit is opened or closed is located on the upstreamside in the discharging direction.
 7. The recording apparatus accordingto claim 1, wherein the support unit is detachably configured withrespect to the accommodating unit.
 8. The recording apparatus accordingto claim 1, wherein, in the recording unit, a through hole of one endside which penetrates one end portion in a longitudinal direction, in adirection which goes along a normal line, and a through hole of theother end side which penetrates the other end portion in thelongitudinal direction, in a direction which goes along the normal lineare provided by setting a direction which intersects both a transportdirection of the medium in the transport path and a direction which goesalong the normal line of a recording face of the medium to thelongitudinal direction, wherein, in the accommodating unit, a base standunit in which an insertion shaft of one end side which has a shaft linein a direction which goes along the normal line, and is inserted intothe through hole of one end side, and an insertion shaft of the otherend side which has a shaft line in a direction which goes along thenormal line, and is inserted into the through hole of the other end sideare provided, wherein the through hole of one end side is a circularhole, and the insertion shaft of one end side is a fixed shaft of oneend side which is fixed to the base stand unit, and wherein the throughhole of the other end side is an elongated hole which has a paralleledge portion which goes along the longitudinal direction of therecording unit, and the insertion shaft of the other end side is a fixedshaft of the other end side which is fixed to the base stand unit. 9.The recording apparatus according to claim 8, wherein the insertionshaft of the other end side includes an eccentric cylindrical memberwhich has a cylindrical face in which a shaft line which is eccentricfrom a center shaft line of the fixed shaft of the other end side is setto a center shaft on an outer face, and the cylindrical face can rotatearound the fixed shaft of the other end side.
 10. The recordingapparatus according to claim 9, wherein the recording unit is configuredby including a plurality of liquid ejecting heads which are providedside by side in the longitudinal direction, and wherein the through holeof the other end side is arranged so as to overlap with a liquidejecting head which is located at the end of the other end portion sidein the plurality of liquid ejecting heads, in the transport direction ofthe medium of the recording unit.
 11. The recording apparatus accordingto claim 10, wherein the through hole of one end side is arranged so asto overlap with a liquid ejecting head which is located at the end ofthe one end portion side in the plurality of liquid ejecting heads, inthe transport direction of the medium of the recording unit.
 12. Therecording apparatus according to claim 11, further comprising: a movingunit which relatively moves the recording unit with respect to therecording face of the medium, wherein the insertion shaft of one endside and the insertion shaft of the other end side are guiding shaftswhich guide a movement of the recording unit when the moving unit movesthe recording unit.
 13. The recording apparatus according to claim 12,wherein, when the through hole of one end side into which the insertionshaft of one end side is inserted is set to a first through hole, therecording unit includes a second through hole which is provided at aposition far from the recording face of the medium compared to the firstthrough hole in a movement direction in which the recording unit ismoved by the moving unit, and into which the insertion shaft of one endside is inserted, and wherein the second through hole is an elongatedhole which has a parallel edge portion which goes along the longitudinaldirection of the recording unit.